Federal primers and slamfires...

Make sure you ignore any advice by Sunray. He is only correct 25% of the time, and who wants to guess on that 25%?:)

CCI 34"s may be :just regular magnum primers" or they may not.The box says they are for semis, so maybe they are, maybe not, who knows? Sierra manual says they are made to be mil spec.

Whatever the case, I had my slam fire in the Garand not because of poorly made ammo ( I made my Garand ammo on a RCBS Rockchucker, FL sized, crimped properly and all ammo inspected for high primers.)

Thee were NO high primers.

What happened to me was a bit of crud in the chamber had built up, slowed the chambering of the cartridge, and the free floating firing pin hit the soft Federal primer.

Most semis will "dimple" the primer, this one set it off.

Using the exact same loading techniques, but with CCI 34 primers, nothign bad happened.

So take it or what it is worth. CCI 34s *may* help, they *WON"T hurt.:cool:
 
And yet others have noted (including me) that they have had "doubles and triples". In my case, it was mostly large rifle primers, which may have been more sensitive than the small rifle. Take your match rifle, put a low-mass carrier and buffer in it (like the one JP sells), and watch the slamfires jump up. Low-mass=higher velocity, so the firing pin hits harder when everything closes.
 
Guess I'm just lucky. I've loaded Fed, Win, CCI, CIL and I think they were Dominion (Older than a lot of us) small & large rifle & pistol. Use a Lee Auto Prime. Same warning as mentioned earlier. Only problem I've ever had was the CCI sp sometimes would not ignite when firing double action revolver.
But when used single action worked fine. Not the gun, just the primer.

Tex sends
 
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