? Fired out of Battery !
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  1. #1
    Tenderfoot
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    Question ? Fired out of Battery !

    Hi - I was out last week and was testing several brand for best accuracy. After just over 100 rounds I had gone thru CCI-40gRNCu, and Fed Black Pack 36gHPCu and was near 35 rnds of Fed AutoMatch when I had a round blow up in my face. The bolt did not completely close, over a quarter inch open when it fired. The case blew out the side, but the bullet went forward - mostly. When I was cleaning that night, I found several tiny 'crescent shaped' shavings of lead inside the action, even around the hammer and springs. Some seemed to have copper coating so they were from either the CCI or Fed BP (both HV) since the Fed AM that blew was RNL. I had had some of the stovepipes of fired cases but that has occurred with most brands and also with my Sav-64, so doesn't seem to be an issue? I keep the action lightly lubed with silicone grease (that caught the shavings), but nothing at the chamber face. There was very little residue in that area, partly 'cause it got blown away? The blown case was too mangled to determine anything from it. Anyone have this sort of thing happen? Any suggestions as to what may have occurred?
    Golphin, Maineiac, jim716 and 2 others like this.

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    Gun Wizard
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    Could the primer have not been completely seated? Sitting proud and crushed by the bolt? Could a piece of debris got between primer and bolt? Could the pin have become jammed in the forward position, possibly by some debris in its channel?

    I once knew a guy shot several times through the hand by his own 1911 going full auto. Turned out the pin got jammed forward by a tiny pice of steel that got loose from the spring. When he cycled in the first round it went full auto on him.

    If possible, a close examination of the primer from the exploded round. It would have been blown back, but does it have a pin dent in it?
    Maineiac, jim716, lever30 and 1 others like this.
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    Marlin Marksman
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    The bolt might have picked up the round incorrectly and caused the priming compound in the rim to set off the round. It would help if you could post a photo of the round.
    lever30 and tranteruk like this.
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  5. #4
    Gun Wizard
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    might try disassemble clean and dry everything real good including firing pin and springs, brake cleaner and carb cleaner in spray cans are easy, cleans pretty good, leaves no residue, then if you want to lube maybe try a little powder graphite
    or something that leaves no residueof any sort to might cause any type of hang up.
    but I'm not an expert just a hobbyest

  6. #5
    Marlin Marksman
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    Quote Originally Posted by tranteruk View Post
    Could the primer have not been completely seated? Sitting proud and crushed by the bolt?

    Not likely, since we're talking about a rimfire cartridge.

    What can happen, though, is that as the gun's action becomes fouled debris may slow chambering and jam an extractor or firing pin in such a way that when the bolt goes forward and the cartridge meets resistance in the dirty chamber the extractor or firing pin can hit the rim, firing the round out of battery.
    lever30, tranteruk and jim716 like this.
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  7. #6
    Sidewinder
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    Scary stuff. Hope you weren't injured. Didn't say what firearm you were shooting.
    lever30 likes this.
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    Marlin Fanatic
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    thank god you were not hurt!
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  9. #8
    Tenderfoot
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    Pics for "Out of Battery"

    HI - First, sorry I didn't say that this was in my M60. Just since it was the 60 forum I didn't think to. Next, I was in a hurry this AM and didn't have pics but I do now. I'll show a couple of the case damage and one showing the end of the case. It shows a really deep Pin strike and at the 8 o'clock position you can make out the extractor mark, but I don't think the round was fully seated into the chamber. Maybe stuck partway in with that last 1/4" hanging out? I would guess these two marks are exaggerated due to the firing pressure when not supported by the bolt or rim? The round did NOT eject, I had to pry it out with forceps I carry in my bag.
    When it went off a good bit of stuff flew up and out - glad I wear the glasses when firing. I just had double corneal replacement a year ago and would hate to lose one

    As for residue, there wasn't a lot in the chamber/bolt face. Although there had been about 100 rounds before this happened, the chamber area wasn't very dirty,except for the powder from the blowout. I don't put lube in either of those areas, just on the action and bolt top-bottom-sides. And I had just cleaned the complete gun before that range session - full strip-down incl action.
    Anyways, this just shows that even with .22s safety equipment is a good idea
    DSCN7094.JPG DSCN7100.jpgDSCN7109.jpg

    Attached Images Attached Images
    Last edited by Fasteddie01; 11-12-2019 at 11:03 PM. Reason: Add Pics
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  10. #9
    Sidewinder
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    Quote Originally Posted by Fasteddie01 View Post
    HI - First, sorry I didn't say that this was in my M60. Just since it was the 60 forum I didn't think to.
    Nope, my sincere apologies. I didn't look at which forum the post was in. As my oldest father used to say "RTFI" (read the info). The only guess I can make is due to the shavings you found something must have gotten between the cartridge and bolt face. Glad you're ok!
    lever30 likes this.
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  11. #10
    Tenderfoot
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    HI MikeM - I do the same thing, going from one forum to another. As for the shavings, there wasn't enough to hold the case a quarter inch out of the chamber unless they were stuck in the chamber itself, just some fine bits from the bullet(s?). Here are some pics of the ones I found in my trash can - I didn't think to save them while cleaning .
    That's a CDN dime for reference. Note the copper on some - the Fed AM is RNL, not copper clad, so those are from either the CCI-MM-RNLCu or the Fed BP-HPCu. So these are from much earlier shots - an ongoing problem. . . it seems. I've never noticed any shavings before, but I'm guessing these are from the Fed BP as it's 36gHP which is a bit higher velocity than the CCI. The higher power could be running the bullets thru a bit faster and 'mis-aligning' just that tiny bit?

    DSCN7113.jpg DSCN7115.JPG DSCN7117.jpg
    lever30 likes this.


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