broken bolt, net.analysis
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Category: Auto Mag Pistol
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URL: http://www.amtguns.info/forum_posts.asp?TID=1065
Printed Date: 26 Mar 2026 at 11:29pm
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Topic: broken bolt, net.analysis
Posted By: TRX302
Subject: broken bolt, net.analysis
Date Posted: 19 May 2012 at 6:30pm
I picked this picture up somewhere. I thought it was here, but I couldn't find the correct thread if so. Does this bolt belong to anyone here? What it looks like, squinting at the computer screen, is fatigue failure. The lip on the right side, over the ejector hole, is darker than the left side. Also note the difference is granularity over the ejector. The ejector plunger is recessed slightly into the ring, so there's a sharp edge at the corner at the bottom unless someone smoothed it out. My best guess is that the failure was caused by repeated strikes from the accelerator. A crack started where the dark area is. The bolt held long enough for powder residue to build up in successive shots, then finally the crack spread far enough that the part to the left simply broke off. Anyone have more detailed/accurate information they could share? |
Replies:
Posted By: schwammy
Date Posted: 19 May 2012 at 9:06pm
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I remember that pic... let me see if I can find the thread. I think it was explained...
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Posted By: schwammy
Date Posted: 19 May 2012 at 9:15pm
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Getting closer (I think...) Based on this thread ( http://www.amtguns.info/forum_posts.asp?TID=1007&KW=&PID=8879&title=primers#8879" rel="nofollow - http://www.amtguns.info/forum_posts.asp?TID=1007&KW=&PID=8879&title=primers#8879 ) I believe it is George's pic...
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Posted By: TRX302
Date Posted: 19 May 2012 at 11:19pm
| Well, it looks like the same blue plastic thingie anyway! |
Posted By: Gerry
Date Posted: 20 May 2012 at 12:18am
| I think GH posted that sometime ago. Gerry |