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| Sounds like pressure may be involved here. Like a bullet with light neck tension and no crimp that pushes out somewhat due to temperature changes. JMHO... Ken....
"The trouble with our liberal friends is not that they are ignorant, but that they know so much that isn't so. " - Ronald Reagan
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| Posts: 5386 | Location: Phoenix Arizona | Registered: 16 May 2006 | 
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| Ken; Thanks for the reply. I would have thought that air pressure would have moved the bullet forward (given the surface area of the base vs. the size of the primer hole), esp in a case without a heavy roll crimp. In 30+ years of reloading, I've never seen a primer back out under internal air pressure before. My initial thought was he was less vigilant than he thought when seating the primer in the first place.... Doug.
"In a question of right and wrong, never be neutral." Theodore Roosevelt
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| Posts: 29 | Location: Rochester, MI USA | Registered: 20 December 2005 | 
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| Posts: 13482 | Location: faribault mn | Registered: 16 November 2004 | 
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| What powder? Some here have reported that heavily compressed loads of fine ball powders can cause primers to back out...
Believe nothing, no matter where you read it, or who said it, unless it agrees with your own reason and your own common sense.
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| Posts: 1780 | Location: South Texas, U. S. A. | Registered: 22 January 2004 | 
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| Now you've discovered why the military crimps in primers. Because some contractor sold them a bunch of improperly seated primers and made up the excuse that the primers had backed out!
I've seen shotshell crimps open back up and bullets both back out and get pushed deeper, but I've never seen primers back out. Let me assure you, if they were found not fully seated, that's the way they were loaded. |
| Posts: 13339 | Location: Henly, TX, USA | Registered: 04 April 2001 | 
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| Amen to what Stonecreek said.
Think about it. How is enough powder going to squeeze through the flash hole, with enough force to push the primer back out without pushing the bullet first and thereby relieving the pressure. Not saying it couldn't happen. BUT HIGHLY IMPROBABLE.
muck |
| Posts: 1052 | Location: Southern OHIO USA | Registered: 17 November 2001 | 
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| I believe that your friend has probably applied too much crimp on the cases. If he uses a "roll crimp" excessively, he'll create excess headspace. If he uses a "taper crimp" excessively, he will also created excessive headspace, due to the fact that the 45 ACP headspaces on the cartridge mouth. Another possibility could be over trimming the cases. |
| Posts: 868 | Location: maryland | Registered: 25 July 2004 | 
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