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AR15, Have You Ever Fired Hundreds Of Rounds In Min.

Discussion in 'Rifle Country' started by sigbear, Nov 8, 2009.

  1. sigbear

    sigbear Member

    Jul 21, 2007
    I'm sure many of you have fired hundreds of rounds in a matter of minutes with your AR's.

    What would be about the limit before overheating or dirty malfunction issues occur, say 500+ rounds of continuous firing?

  2. cat_IT_guy

    cat_IT_guy Participating Member

    May 9, 2007
    Metamora Illinois
    My wallet limits me well before my AR does.
  3. Jeremy2171

    Jeremy2171 Active Member

    Feb 23, 2007
    In a Retired Marines Valhalla
    ~800 rounds in less than 10 mins. Failure due to extractor spring lost its temper due to the heat....dirt/fouling was not an issue. Replaced spring only and weapon was fine. A "D-fender" type spring likely would have kept functioning.
  4. Smith357

    Smith357 Participating Member

    Feb 19, 2005
    Columbus, Ohio
    Way back when I was in the Corps (79-82) our unit went to the range for 3 days. A deuce and a half loaded with ammunition pulled up and we were told it was old ammo that we had to use up. After 2 days of training exercises they let us cut loose on the third day. My buddies and I loaded up all our magazines and proceeded to fire them full auto through my M16a1. I don't rightly remember how many 30 round magazines were fired before my barrel began glowing but it did start to glow a dull red. I stopped because we ran out of loaded magazines, not because the rifle failed. Also when I was done I set the flash hider in my boot to keep the barrel out of the dirt it left a circular branding in the boot leather.
  5. SalchaketJoe

    SalchaketJoe Member

    Jul 30, 2009
    Was doing a battalion night shoot at PTA in Hawaii. All on line in fighting positions, loaded mags and 203 rounds laid before us. One of my guys had borrowed some mags from the machine gun section cause they didnt need them. He had around 15 mags ready. We started fired, I burned through my grenades and three mags before the shoot was stopped due to some brainchild down the line firing his tracers straight up in the air, directly in front of the BN CC. Well that aforementioned Marine of mine with the 15 mags managed to get through them all in that short time. He called over to me and in the darkness I could see his barrel glowing like the burner on your stove. Through the handguards even. Rifle was fine. Though I wouldnt recommend it.
    I have talked to my dad about it, he did some shooting from helo's in SE asia a few years back, he said you dont have to worry til it turns WHITE hot, then, rounds cook off, runaway gun, even warp the barrel.
  6. Onmilo

    Onmilo Mentor

    Jul 26, 2004
    We had the same type of suppressive night fire exercises you describe while I was in the Army.

    I have attended a couple of combat courses that require the shooter to go through about 250 rounds in under ten minutes and that is a lot of firing through one riffle at one time.

    As another poster has pointed out, the cost of ammunition today precludes any serious lead slinging for all but the most wealthy and those guys tend to also be the most frugal of the lot.
  7. Chindo18Z

    Chindo18Z Participating Member

    Dec 24, 2002
    Yes. I have. Numerous times.

    My contribution to a recent TFL thread discussing alleged M4 failure in Afghanistan ( http://www.thefiringline.com/forums/showthread.php?p=3736723#post3736723 ):

  8. Shawn Dodson

    Shawn Dodson Senior Member

    Dec 28, 2002
    My standard reliability stress test for an AR is to shoot four fully loaded 30 round magazines as fast as I can press the trigger and perform combat reloads.

    I don't ever envision shooting more than this many rounds this quickly at any one time. I also don't ever envision being in a situation, except a training class, where I'm going to shoot more than 500 rounds without cleaning my weapon.

    A couple of drops of oil in the gas vent holes of the bolt carrier is usually enough to keep an AR running reliability after it starts hiccuping due to a dirty action.
  9. Float Pilot

    Float Pilot Senior Member

    Jul 27, 2007
    Kachemak Bay Alaska
    I once burned through 14 magazines in a very short period of time. I thought is was several minutes long, but the radio guy had his mike keyed and the HQ weinies said it was all over with in less than two minutes. M-4 worked just fine.
  10. Riss

    Riss Active Member

    Dec 27, 2002
    SE Quad, Penns Woods
    Well after 100 rounds in a Beta C mag the gas tube will be glowing red. Another mag and it turns white, then it melts, droops, and as soon as the tube collapses or blows a hole in its side the gun stops running.
  11. rcmodel

    rcmodel Member in memoriam

    Sep 17, 2007
    Eastern KS
    Ordanance testing of the M4 indicates that on continous full-auto fire, cook-offs start occuring at around 400 rounds.
    Shortly after that, the barrel becomes soft and a bullet will eventually exit the side of the barrel.

    It is unlikely you can get an AR-15 that hot that fast on semi-auto when you factor in mag changes.

  12. sfc_mark

    sfc_mark New Member

    Aug 29, 2009
    Augusta, GA
    Not quite "hundreds" within minutes, but a bit over a hundred from an M16A1 (with the happy switch off) in a couple of minutes at a night live fire range in Basic Training. We were told to burn up our allotment of ammo as fast as we could pull the trigger.

    When the smoke started pouring from the handguards, the Drill Sergeant told me to lay off for a couple of minutes while it cooled down. :)
  13. Beelzy

    Beelzy Member

    Aug 15, 2009
    I've gone hundreds of rounds in mere minutes on a Vintage CAR and a newer M4'gery,
    and I shoot till the guns smoke like they're on fire. No malfunctions or broken parts.

    I do this fairly regulary as of late. I also inspect thoroughly before such session and after.
  14. GRIZ22

    GRIZ22 Senior Member

    Nov 4, 2006
    What would be about the limit before overheating or dirty malfunction issues occur, say 500+ rounds of continuous firing?

    I have fired over 1000 rds in a training day with no malfunctions of any kind.

    I have witnessed a M16 melt the gas tube after firing a little over 400 rds full auto as far as you can change the mag and shoot it out. That was about 2 minutes. I don't know if this is typical but I did see it happen.

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