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Point-and-Shoot: TrackingPoint's New Linux-Controlled AR-15s

Ars Technica takes a look at the next generation of TrackingPoint's automatically aimed rifles (not "automatic" in the usual sense), and visited the shooting range where they're tested out. Like the company's previous generation of gun (still in production, and increasingly being sold to government buyers), TrackingPoint's offerings integrate a Linux computer that makes acquiring and tracking a target far easier and more accurate than it would otherwise be. Unlike the older models, though, this year TrackingPoint is concentrating on AR-15s, rather than longer, heavier bolt-action rifles. A slice: The signature "Tag-Track-Xact" system has gained additional functionality on the AR models, too. With the bolt-action guns, there was only one way to put a round onto a target: first, you sighted in on the thing you wanted to hit and depressed the red tagging button just above the trigger. A red pip would appear in the scope’s crosshairs, and you’d place the pip onto the target and release the button. The scope’s rangefinding laser would then illuminate the target to measure its distance, and the image processor would fix on the object; if you moved, or if the target moved, the red pip would remain atop the target. Then, to fire, you squeezed the trigger and lined the crosshairs up with the target’s pip. When the two coincided, the weapon fired. This method works fine for a bolt-action rifle where every round has to be manually chambered, but it’s less than ideal for a carbine, which one might want to fire off-hand (i.e., standing up and aiming) or from the hip. With this in mind, the AR PGFs have a new "free fire mode," in which you can tag a target once and then shoot at it as many times as you want by pulling the trigger directly, with all the shots using the ballistic data from the first shot’s tag. That means, says writer Lee Hutchinson, a rifle "with essentially 100 percent accuracy at 250 yards."

51 of 219 comments (clear)

  1. Zorg? by Nidi62 · · Score: 4, Funny

    With this in mind, the AR PGFs have a new "free fire mode," in which you can tag a target once and then shoot at it as many times as you want by pulling the trigger directly, with all the shots using the ballistic data from the first shot’s tag.

    With the replay button, another Zorg invention, it's even easier. One shot...and replay sends every following shot to the same location.

    Although I guess in this case you actually want to push the little red button.

    --
    The only thing necessary for evil to triumph is for it to be pitted against a slightly greater evil
  2. Re:a rifle with 100 percent accuracy by _merlin · · Score: 3, Funny

    Get your FLOSS personalities right: Eric S Raymond is the gun nut.

  3. Robot by wisnoskij · · Score: 4, Interesting

    At this point, the main problem seems to be putting the human into the mix. I could see putting a laser distance gauge, and some rudimentary calculator to automatically adjust for distance; I am sort of thinking, highlighting the correct location in the scope instead of actually adjusting it. But if you you are going to design complete tracking tech, put the gun on a tripod with a few motors. Hell, you could probably even mount it on a guys backpack.

    --
    Troll is not a replacement for I disagree.
    1. Re:Robot by baKanale · · Score: 4, Informative

      The summary doesn't explain well, but TrackingPoint isn't a robotic gun or anything like that. It is a system that uses rangefinders and other sensors built into a scope that allow a user to designate a target, and then, when the trigger is pulled, only allows the weapon to fire when it's aligned with an optimal firing solution. This lets novices shoot on target at extended ranges. They've previously done this with bolt action rifles, but apparently they've developed it for use in AR-15s, as per the article. Here's a link to their page about the original system: http://tracking-point.com/prec...

    2. Re:Robot by K.+S.+Kyosuke · · Score: 2

      You need a servo mechanism that is fast enough to be useful and stable, and for that they're using human arms. Human arms (when controlled by a reasonably sober brain) are very very good servomechanisms. Duplicating them with motors seems trivial - Until you run into stability problems.

      What stability? What do we have computers, dynamic system state prediction, and feedback control for? In fact, a certain lack of stability might be exactly the thing you might need for a truly smart weapon. Imagine a soldier holding a weapon with the second grip being not too far forward and held somewhat loosely (so that the end could swing slightly). In that case, a reaction control system near the end of the barrel ought to be able to exercise limited adjustments in azimuth and elevation to swing the barrel over the computed aiming point, or to shift an imprecise swing only approaching the aiming point onto the point. Because everyone is holding the weapon differently (regarding the stiffness of the grip), the dynamic parameters of the system can't be preset statically, but they can be measured right before the point of initiating the movement of the barrel towards the aiming point. In addition, even if these parameters are changing as the weapon is aiming itself, the error imparted by these parameter deltas is decreasing exponentially as the weapon is approaching the firing point, because inertia is playing a role here.

      --
      Ezekiel 23:20
  4. Re:Apply liberal amounts of gloss. by sribe · · Score: 2

    Throw real world movement of the target, change of the landscape, and now you're talking something freakishly hard.

    Don't forget variable winds between you and something 250 yards away... 100% accuracy my ass...

  5. Re:So let me get this Straight. by Sarten-X · · Score: 2

    Yeah, that seems to be the case.

    It's just a regular gun that waits to fire until you've lined up with where you tried to shoot initially.

    Nothing too new on the image processing front... but it runs Linux and pisses off the peaceniks, so Slashdot runs the story.

    --
    You do not have a moral or legal right to do absolutely anything you want.
  6. Great for High Schools by aybiss · · Score: 2, Funny

    Now to ensure that every high-school age child in America gets one!

    --
    It's OK Bender, there's no such thing as 2.
  7. Re:Question by Sarten-X · · Score: 5, Insightful

    How many more children will die because of this invention?

    I'm going to go with "none in the foreseeable future".

    Must we have something worse than Sandy Hook for people to wake up and say "no" to gun violence

    How about the Bath School disaster, where 45 people died, mostly children? Or perhaps looking away from human causes, we could consider infant diarrhoea, which kills a couple million children per year and can be cured with a few pennies' worth of salt? How about political violence and genocides, which kill thousands of civilian children?

    The simple answer is that there is no simple answer. The Bath School disaster was done with explosives. Infant diarrhoea is mostly a problem because parents don't have access to medical care, or realize that they need it. Political conflict is never so simple as having the good guys fight the bad guys - all sides think their righteous virtues are worth dying for, and worth having innocent people die for.

    The reality of life is that it's trivial to kill someone. A human body is an incredibly complex machine, with billions of interacting parts, and it's just so easy to screw it up fatally. Sure, you could ban guns with fancy sights, but it's still just as easy to build a bomb, grab a knife, or slip a bit of poison into a meal.

    Let's say "no" to pithy slogans and short-sighted politically-convenient campaigns.

    --
    You do not have a moral or legal right to do absolutely anything you want.
  8. You have selected a headshot: by MrKaos · · Score: 2

    Are you sure you want to shoot this target?

    --
    My ism, it's full of beliefs.
  9. Re:Now do that with an AA-12 by Travis+Mansbridge · · Score: 2

    I don't think there will ever be such a thing as a 100% accurate shotgun.

  10. Obligatory by penguinoid · · Score: 5, Funny

    Could this be Linux's killer app that would blow the competition out of the water?

    --
    Don't waste your vote! Vote for whoever you want, unless you live in a swing state it won't matter anyways
  11. A real-world aimbot by Animats · · Score: 4, Insightful

    It's an aimbot for real rifles. Now, any rifleman can be a sniper.

    Yes, it's too big, too complicated, and too expensive. That's a temporary problem. Ever see the first laser sight, from the 1980s? It used a helium-neon laser tube and required a power cord. There's been some progress since then. This aimbot technology should be down to smartphone size, if not cost, soon enough.

    1. Re:A real-world aimbot by TubeSteak · · Score: 3, Informative

      It's an aimbot for real rifles. Now, any rifleman can be a sniper.

      The majority of sniper training is about field craft, not shooting.

      And 100% accuracy at 250 yards is not as useful as you'd think.
      The engagement ranges in Iraq/Afghanistan were mostly 300 to 500 meters (328 to 546 yards) .

      Unfortunately, the M4 + 5.56 is intended for ranges less than 300 yards.
      This leaves a big gaping hole in the infantry's ability to effectively kill past 300 yards.
      The Iraqis and Afghans have no such range problems with their AK-47s and 7.62 ammo.

      TLDR: The military needs to reclaim 300-500 yards with a suitable infantry weapon.
      FYI - A trained sniper is expected to have 90% accuracy at 600 yards.

      --
      [Fuck Beta]
      o0t!
    2. Re:A real-world aimbot by LordLimecat · · Score: 2

      Im not seeing where you're getting your info; everything Ive ever heard indicates that the only issues reported with the M4 are reliability, due to its tighter tolerances, but that its also more accurate. Thats backed up by this:
      http://en.wikipedia.org/wiki/C...

      Which indicates the M16 /5.56 is accurate to 500m, whereas the AK47 with 7.76 ammo is only effective to 380m. If those are accurate, the M4 is lighter, uses 50% lighter ammo, and is accurate 25% further

  12. Re:Now do that with an AA-12 by roman_mir · · Score: 3, Funny

    Aaah, a true killer application, the year of GNU/Linux on your favourite weapon of choice :)

  13. You Mean by Greyfox · · Score: 3, Informative

    Like that scene from The Fifth Element? I'd post a link but I find it amusing that if you search youtube for "That scene from the 5th element", it's the second link.

    --

    I'm trying to teach myself to set people on fire with my mind... Is it hot in here?

  14. Re:now graft it onto a grunt's arm by Anonymous Coward · · Score: 4, Insightful

    Remote controlled troops will kill the terrists for US!

    Other way around. This is the perfect assassination weapon.

    Politicians will be queuing up to ban it as soon as they realize how big a threat it is to them. All the "terrists" need to do is to set the suitably disguised receiver and barrel of the rifle on an intentionally randomizing mount pointing where a politician is speechifying, tag the legislator via a phone link as soon as they're in sight, then walk away. A timer on the trigger can keep clicking away after a preset interval to get the job done.

    Who knows, this might be the Colt Peacemaker of our day?

  15. Firing blind by dohzer · · Score: 2, Interesting

    Will the be a version that blind people can use too?

  16. Re: Apply liberal amounts of gloss. by O('_')O_Bush · · Score: 4, Informative

    250 yards is not particularly far away with a fast/flat cartridge like 5.56 NATO.
    My ballistic calculator says that given the torso is, on average, 18" across, this system could aim dead center/upper chest (zeroed for 100 yds) and with no correction at all, hit its target correcting for elevation and windage for +/- 17mph wind with M855.

    I am actually fairly unimpressed by this. Any dope can make a 300 yard shot with an AR on a head sized target and telescopic sights. If this was able to make those shots at 500+ yds, that would really be something.

    --
    while(1) attack(People.Sandy);
  17. Re:Now do that with an AA-12 by FatdogHaiku · · Score: 2
    --
    You have the right to remain sentient. If you give up the right to remain sentient, you will be elected to public office
  18. Re:So let me get this Straight. by aXis100 · · Score: 2

    It's easier to aim a laser tag with a small switch - and correct it if you've got it wrong - than to aim and fire using the trigger perfectly the first time.

    It's all about repercussions and sensitivity - the target probably wont get alerted by the tagging beam, and you can correct it as many times as you like whilst maintaining stealth. Once you have it right, the first real bullet will hit it's mark and the show is over.

  19. Linux? by sound+vision · · Score: 3, Interesting

    Does anyone know what benefit is actually provided by using Linux? This is precisely the type of embedded system with life-or-death consequences where I'd expect to see the entire thing done in heavily-audited assembly, or something close to it, interfacing directly with the hardware, with no OS to get in the way.
    Certainly I'd trust it more than a Windows CE-based weapon, and I suppose if you want to reduce your attack surface, open source is the way to go - you can cut out the components that aren't needed. But, even still - I see little reason for an operating system to be there, except for convenient/cheap/fast development.

    1. Re:Linux? by ColdWetDog · · Score: 2

      The guys just really wanted to give Linux a boost by creating the killer app.

      --
      Faster! Faster! Faster would be better!
  20. Re:Why didn't they use Windows? by Opportunist · · Score: 4, Funny

    Hmm... let's see...

    1. You get asked at least 3 times whether you're really, really sure you want to kill that file, I mean target.
    2. Just when you're about to take a shot, your rifle insists that it needs to install upgrades, then shuts down without even asking you.
    3. You pull the trigger, your sights get grey, you hear a ping and get asked whether you want to allow or deny that shot.
    4. In the next version of your gun your sights and trigger get replaced by huge, unwieldy and flashy tiles that you have to lug around, where nobody on this planet can explain why you need them (allegedly they're great for those Navy guys, why you need them in the infantry is explained with an attempt to unify the troops), and it will take at least a year of complaining from your whole platoon 'til you get your old sights and trigger back. And even then only if you ask for them.
    5. Your gun would come without cleaning equipment, without safety and a few other things (unless you bought the "ultimate" version), but you'd get a free deck of playing cards.
    6. Cleaning the gun is a hassle and a half. Technically, what people do instead is throwing it away once it gets so dirty that you can't shoot reliably anymore and get a new one.

    --
    We used to have a Bill of Rights. Now, with the rights gone, all we have left is the bill.
  21. Re:Now do that with an AA-12 by LordLimecat · · Score: 2

    Its still not gonna be terribly accurate with a smoothbore barrel.

  22. One simple answer. by khasim · · Score: 4, Insightful

    The simple answer is that there is no simple answer.

    There is one simple answer.

    People (on average) are less afraid of things that they are FAMILIAR with and that they FEEL they have more control over. So people are comfortable driving to the airport but worry about the flight.

    People are scared of "terrorists" killing them but are, statistically, more likely to be killed by someone in their own family.

    So the scariest thing would be someone that you don't know who is planning to kill you or your child for a reason you don't understand.

    But the reality is that if you're living in the USofA and you're white then you will die from the food you've chosen to eat and the exercise that you've chosen to skip. But since you have control over that (I'll start tomorrow) and it's familiar you won't worry about it.

  23. Re:Now do that with an AA-12 by Sqr(twg) · · Score: 5, Interesting

    will be the new level of warfare.

    Yes, and not in a good way.

    It used to be the case that you needed experienced, diciplined soldiers to make snipers. If you tried to fight a proxy war by arming insurgents the way the U.S. armed the Mujahideen (al Quaeda), or the way Russia is arming Ukranian separatists, then you got a pretty inefficient force that could only win by war of attrition.

    These new weapons will make it much easier for anyone with money (like the IS) to recruit people out of the slums and quickly turn them into effective fighting units.

    Also it will increase the efficiency of child soliders, and therfore lead to more recruitment.

  24. Re:Apply liberal amounts of gloss. by ColdWetDog · · Score: 2

    So does a stinger. Better warhead. Heat seeking is easy with all that hot air and inflated sense of importance.

    --
    Faster! Faster! Faster would be better!
  25. Re:For loops are illegal by ColdWetDog · · Score: 3, Insightful

    Take your meds. The ATF probably wants to buy these things.

    Since these guns have been all over the gun-nut press for the past couple of years, I'm sure that various three letter government agencies have heard about them and paid them some visits. Most cordial visits.

    --
    Faster! Faster! Faster would be better!
  26. Someone who reads random gun stuff on the net by Sycraft-fu · · Score: 5, Informative

    It is amazing how much misinformation flies around about guns. One of the common ones is "OMG the M4/16 is such crap, the AK is so much bettar!"

    You are quite correct about the range. The AR-15 platform weapons are much more accurate. Anyone who has ever fired both can easily tell that.

    The issue that people like the grandparent conflate is the lethality of the 5.56x45mm round at longer ranges. Though the M16 can easily hit a target at long range (with a skilled marksman operating it), because of the small size and low mass of the round, it is often not as effective as you would want. If the bullet does not fragment or tumble, it can go right through someone and the small hole does little damage.

    That is the issue it has at range, not accuracy or ability to reach that range.

    Also this isn't like it is some completely unknown, or unsolvable, thing. The military also has weapons that use 7.62x51mm rounds which are larger rifle bullets and have much greater range, mass, and kinetic energy. For longer engagements still things like 8.58Ã--70mm and 12.7Ã--99mm are used.

    Of course as you move up in caliber and amount of propellant, weapons become bigger and heavier, and have larger amounts of recoil to deal with, it is always a tradeoff and is one reason why the standard personal weapons use 5.56.

    In terms of 5.56x45mm vs 7.62Ã--39mm (which is what the AK uses, is is not the same as the larger NATO round) the real issues come up at medium range (100-300m) and with barrier penetration. The light, high velocity 5.56 round tends to be fantastically lethal below 100m because the high velocity results in fragmentation when it hits the target. However since military rounds may not be specifically designed to fragment or expand (the Geneva convention prohibits it, civilian and police rounds are available that do), as it slows down at greater ranges they lose that ability and are not as damaging. Also, because of their low mass and tendency to fragment they are poor performers when shooting through barriers like windshields, doors, and so on.

    THAT is the issue the rounds have in general use vs 7.62Ã--39mm rounds. Not long ranges. While they aren't super effective beyond 300m, they are reasonably accurate at least, which is not the case with the 7.62 rounds. At a long range engagement an M4 would be at a decided advantage to an AK-47.

    However neither was designed for long range use. They are carbines, made for medium range and below. They trade overall power and range for smaller size, lower weight, and better portability. As their widespread use in many conflicts around the world indicates, they do well in that arena.

    1. Re:Someone who reads random gun stuff on the net by Anonymous Coward · · Score: 2, Interesting

      Geez, another limbaugh-type master of the half-truth. Am so very glad that 'gun stuff on the net' has enabled your brilliance.

      Former marine here - and the 5.56 NATO ball round does NOT fragment unless there is some intervening hard mass (concrete, rebar, etc). The boys in Afga were routinely taking 200m head shots and 400m body shots. And we qualify at 500m with both the M16 and M4 - whether you will be a cook or technician or infantry, you do not get out of boot camp until you can qualify. And you have to re-qual at least once per annum.

      The AK is designed for reliability and for use by idiots - assuming that only simple ball round used. The M16 is designed for reliability for use by disciplined well-trained personnel, and not necessarily limited to just ball rounds. The AKs tend to start having accuracy problems past 200m, while the M4 is just fine at 500m.

      The only reason American police have 'problems' with M16-type weapons is because of ignorance and attitude - poor training and total lack of disciplined fire control.

      Larger caliber, and much heavier, rifles are typically for use by the unit's designated marksmen, or the actual sniper dudes. Snipers generally do not have to hump 45kg of gear 10-20km every day. So mass for a battle rifle is very important for how relevant infantry (army rangers and marines) typically operate.

  27. Re:How does the Tagging Work by swedishsax · · Score: 2

    http://tracking-point.com/innovations/hardware/tag-button The target is not marked by anything physical. The distance to target is measured with a laser range finder, but they don't go into any details as to how the subsequent tracking is performed (and understandably so, that's where they make their money). It could be an active system, where the scope continuously bounces laser off the target and corrects for movement within reasonable limits. It could be visual, where the system guesses the target's outline and then tracks it using the camera. Or it could be something else. Either way, automated tracking of ground targets is notoriously difficult compared to targets in air or on water, so it would be interesting to know how they deal with things like one deer moving briefly behind another, or standing behind a tree for a while and then coming out again.

  28. Re:Now do that with an AA-12 by viperidaenz · · Score: 2

    You mean give some insurgents a Buk and they'll shoot down a civilian plane?

  29. Re:Question by swedishsax · · Score: 2
    As someone who has spent a lot of time in both the armed forces and the defence industry, please allow me to disabuse you of the notion that technology, any technology, has any impact on collateral damage. In WWII there was widespread collateral damage from strategic bombing of industrial centres. If such a full-scale war between roughly equal powers were waged today, with our smart bombs and pin-point accuracy missiles, the exact same thing would happen. This is because while technology advances, the objectives of war remain the same.

    In this particular case, "intended" is not the same as "illuminated". The gun doesn't know what your intended target is, only what you light up. If you point it at a child, that's what it will track: the responsibility is yours. Or put another way, guns don't stop people from killing people - people do.

    This product is marketed as a way to improve accuracy and record shot videos, not to make the gun safer. Weapons are inherently unsafe, and the only way to make one safe is to destroy it.

  30. Re:Question by nospam007 · · Score: 3, Informative

    'Australia banned guns: Sure, there are no school massacres but the murder rate hasn't decreased.'

    You're reading the wrong newspaper, the Washington Post says otherwise.

    http://www.washingtonpost.com/...

    "So what have the Australian laws actually done for homicide and suicide rates? Howard cites a study (pdf) by Andrew Leigh of Australian National University and Christine Neill of Wilfrid Laurier University finding that the firearm homicide rate fell by 59 percent, and the firearm suicide rate fell by 65 percent, in the decade after the law was introduced, without a parallel increase in non-firearm homicides and suicides. That provides strong circumstantial evidence for the law's effectiveness."

  31. Re: Apply liberal amounts of gloss. by K.+S.+Kyosuke · · Score: 2

    Perhaps this is not about accuracy at these kinds of ranges; eventually, weapons like this might be able to give you much faster reactions. E.g., you see four enemies, you press the trigger (the weapon doesn't fire), you swing the weapon across the general direction of the enemies, and it fires automatically four times at just the right time as the barrel is passing over the targets (or, more accurately, the proper aiming points).

    --
    Ezekiel 23:20
  32. Re: Apply liberal amounts of gloss. by pehrs · · Score: 5, Informative

    You would be surprised how bad people shoot in the real world... I hunt. I fire about 50 shots on big game (mostly boar, deer and moose) a year, and well over thousand if you count small game. I compete, primarily in sporting and skeet but also 300 meter rifle.

    In my experience the wast majority of shooters have a hard time hitting a deer sized targets with a rifle at 300 meters without special training. Add any sort of complication, like a little bit of stress, moving target, bad light or the like, and most people won't hit a deer sized target consistently (that is, 10 out of 10 in the heart-lung area) at 100 meters. The performance of the cartridge barely matters. Most people simply need a lot of training to aim and fire a rifle well, especially under stress.

    I spend a considerable amount of my spare time tracking down deer which were wounded by people with the "Any dope can make a 300 yard shot" attitude. They are typically not quite so tough at 4 am in the morning when we have spent a few hours tracking down the deer they wounded. While it is good training for the dogs, and it is very rewarding work, it would be better if people learned how hard it is to shoot well on distances over 100 meters.

  33. Re:a rifle with 100 percent accuracy by Anonymous Coward · · Score: 4, Funny

    I've never seen any of you at People With Girlfriends or Humans That Wash either.

  34. Re:Now do that with an AA-12 by Chas · · Score: 3, Insightful

    There is no "overkill".

    There is only "kill" with varying levels of confidence.

    Shoot a guy once, and there's always the possibility he's not dead.

    Shoot him 300 times, and yeah, you're pretty certain of him.

    Shoot him with a missile, and now you're sure he's not just merely dead, he's really most sincerely dead.

    Just...fire it from outside it's blast radius...(See "Fireball in 10x10 room")

    --


    Chas - The one, the only.
    THANK GOD!!!
  35. Re:Question by trout007 · · Score: 4, Insightful

    Go look at the real data. Homicides are declining in Austrailia and the US. Since Austrailia banned guns the firearm murder rate dropped but it dripped faster than the overall homicide rate which means that quite a few killers still decided to kill even without a gun. In the same time the US had more guns and more people carrying guns and also saw a decrease in homicides. If you remove the places with strict gun laws the homicide rate drops even further.

    --
    I love Jesus, except for his foreign policy.
  36. Re:Now do that with an AA-12 by gmhowell · · Score: 3, Insightful

    AA-12? Sort of an overkill for a personal weapon, I'd say...

    That's loser talk.

    --
    Jesus was all right but his disciples were thick and ordinary. -John Lennon
  37. Re:Now do that with an AA-12 by CrimsonAvenger · · Score: 4, Insightful

    Its still not gonna be terribly accurate with a smoothbore barrel.

    Does the phrase "M1A1 Abrams" have any meaning for you?

    Hint: the Abrams gun is a 120mm smoothbore. It's probably the most accurate tank gun in current use.

    --

    "I do not agree with what you say, but I will defend to the death your right to say it"
  38. Re:So let me get this Straight. by BirdBrained · · Score: 3, Funny

    ...And if you screwed up the first step, and tagged a plant instead, you are screwed.

    For that you need a Salad Shooter.

  39. Re: Apply liberal amounts of gloss. by Muad'Dave · · Score: 2

    ... it would be better if people learned how hard it is to shoot well on distances over 100 meters.

    The corollary to this is "don't shoot beyond your abilities." If you know you're inexperienced or a poor shot while under the influence of 'buck fever', don't try the long shots in the first place. These days there are plenty of does* that will basically walk right up to you for a clean, humane kill.

    *Where I live, they've basically declared open season on deer - 6 a year, three of which must be anterless, the whole 1.5 month firearms season is either-sex, plus all the bonus deer tags you can buy.

    --
    Tiller's Rule: Never use a word in written form that you've only heard and never read. You will end up looking foolish.
  40. Re:Now do that with an AA-12 by qmetaball · · Score: 2

    it also fires shells that cost more than a car.

    --
    Everything is porn to somebody.
  41. Re:Now do that with an AA-12 by K.+S.+Kyosuke · · Score: 3, Informative

    It fires fin-stabilized sub-caliber darts with an extremely high ballistic coefficient. Of course it's going to be highly accurate even at long distances. I'm just not sure that this scales down to small arms.

    --
    Ezekiel 23:20
  42. Re:Now do that with an AA-12 by Anonymous Coward · · Score: 5, Interesting

    Hi!

    I'm a recreational shooter and have at least a passing familiarity with small arms doctrine. This has very little military application.

    Why?

    Well...

    If you are running a crew serviced weapon, what is traditionally thought of as a 'machine gun', you aren't trying to match every bullet to some knucklehead's torso. That isn't your job. Your weapon isn't accurate enough for that sort of milarky. What you can do is drop 600+ rounds a minute in a sustainable way. You end up with what's referred to as a 'beaten' area. Say a machine gun has an accuracy of around 6 MOA.. which they don't. An MOA means minute of angle.. roughly 1" at 100 yards, 2" at 200 yards, and doubles every time you double the distance.

    Say you have that super-accurate MG. It's dropping 600 rounds a minute into 6" at 100, a foot at 200, two feet at 400 and etc. Say you've got a guy prone hiding behind a stump at 200 yards. You aren't concerned with trying to one-shot his brain pan. It's far more efficent on your time to drop a 2-3 second burst (20-30 rounds) than take the 5 seconds it'd take to setup a perfect shot with a better weapon. It's about hit probabilities. If you can fill a space with enough bullets fast enough you'll overcome inaccuracy. Accuracy is difficult to achieve in the field. More bullets in a given space is relatively easy.

    Rifles work the same way. 3-4 MOA is typical on modern combat rifles. within 200 yards, wind drift and bullet drop is less than your accuracy threshold. At 3 MOA that maybe true all the way to 400 yards. Forcing me to slow down and achieve a 'perfect' aim point doesn't buy me anything -- name of the game is me + 2 or 3 supporting fellows filling the same space with bullets till probability gives us a center punching of the target. IE, 6 rounds into 8 MOA in 5 seconds is more likely to hit center than 2 rounds at 3 MOA in the same time. That's a major part of the point of burst fire. You can't overcome inherit inaccuracy in the system with better aim. Only by recovering from the shot and pulling the trigger faster.

    The gizmo can't do that. The combat revolution you envision was achieved decades ago by semi and fully automatic weaponry.

  43. Re: Apply liberal amounts of gloss. by Pikoro · · Score: 2

    500m with an M16A2 is part of normal training in the Marine Corps. This is with open sights. I can put 10 rounds in an 8" circle at such distances.

    --
    "Freedom in the USA is not the ability to do what you want. It is the ability to stop others from doing what THEY want"
  44. Re:Now do that with an AA-12 by dcollins · · Score: 2

    "(See 'Fireball in 10x10 room')"

    Edition dependent: Yes in 1-2E. No in 0E, BX, 3-4-5E.

    http://deltasdnd.blogspot.com/2011/07/spells-through-ages-fireball.html

    --
    We know where leadership by an anti-intellectual "strongman" who scapegoats minorities and likes boisterous rallies goes
  45. Re:Now do that with an AA-12 by iggymanz · · Score: 3, Informative

    yes, slugs are *extremely* accurate and are designed to be fired through smoothbore barrel *with a choke*, look it up how they work. I get 3" groups at 100 yards out of my Remington 870 with 3" rounds