SmallCaliberCentral

Bought a brick to try in the .204's and my .20 Tac's. First rifle I tried them in. a Ruger #1 in .204, I had 8 rds out of 30 that wouldn't fire no matter how many times I dropped the hammer and of those that fired a couple of them took several whacks before they fired. Either the primers are no good or else the hammer spring in the #1 needs to be replaced with a stronger one.

Tom

Ahh CCI's extra hard cup military primer. I always wondered how they'd work.
Never got around to trying them in a bolt action. It will be a lot longer before I get that urge again now.Thnx

They are made to prevent accidental discharges in autoloading rifles like ARs and Mini-14s, as noted above, with extra hard cups. Those rifles usually have floating firing pins, which often cause problems using regular primers. SKSs and AKs usually do exactly the same thing. I played around with an SKS for awhile, and when using regular large rifle primers, it would often double or triple Substituting surplus military ammo cancelled the boo-boos, but wasn't nearly as entertaining.

I shoot both the CCI 450 and the CCI #41 military spec primer. The only difference is that the anvile is offset from the center of the primer in the CCI #41. This requires more fireing pin force to set it off. The fireing pin in my AR 15 is .008 inch smaller diameter than my Savage 12VLP's. The AR 15 fireing pin seems to hit with allot more force. As an example of this I will explane the differences useing Federal 210 match primers. In my Savage I have shot over 2000 rounds and never had a pierced primer. That same load in my AR 15 will pierce at least two primers in 100 rounds. To fix this I had to use Rem 7 1/2 primers or the above CCI primers because they have thicker cups.

Because the CCI#41 is hard to set off, If you resize your cases to much the fireing pin cannot hit with enough force to reliable set off the primer. When the case shoulder is set back to much the case is loose in the chamber. Try screwing your sizeing die up a small amount to keep from pushing the shoulder back. You only need .002" to.003" shoulder set back from the fired case. I bought a Wilson 204 Ruger cartidge case guage to set up my dies to get the .002" shoulder set back. This die setting gives me .002" in my Savage and .003" in my AR 15. As you can see my AR 15 chamber is .001" deeper than my Savage. Without this guage I would have no idea how far I set the shoulder back. It's a $20.00 investment but it is worth buying.

If your fireing pin and spring worked before and had no malfunctions, then that is not the problem.

Grayfox