So brand new to the 6PPC but not to reloading. A friend gave me a few cases to start with that had been fired a few times. I loaded them with a starting load of H-4198 (saving my N-133). After firing a few and depriming/sizing them I noticed a slightly bulging primer pocket. Uniformed and cleaned and reloaded them and went back to the range. They fired OK but didn't group real well. When I deprimed/sized them again the whole primer pocket was missing on a few cases. So I got some brand new Lapua 220 Russian cases and went thru the whole sizing process. Got back home and slightly bulging primer pockets again. Uniformed/cleaned/reloaded but this time I primed 5 cases with the same CCI primers as before and 5 cases with Federal Match primers. Of the 5 CCI primed cases 2 blew out the primer pockets completely, the 5 Federal primed cases no further damage. My theory is that the CCI primers are to hot and are "etching" the edges of the primer pocket and subsequent firings are completely breaking the primer pocket out. I am in the process of processing new cases and will prime them solely with Federal primers. Thoughts?
6PPC Primer pocket blowout
- Thread starter tcrossfire
- Start date
Just a thought, but I wonder if you have to much unsupported case at the back of the chamber? Tell us about the rifle please. Be careful, you are playing with fire!
Paul
Paul
Tim Singleton
Gold $$ Contributor
You don’t say how much 4198 you are using
Rifle is a Stolle Panda action with Jewel trigger and Krieger barrel and Borden fiberglass stock, gunsmith was Dwight Scott. Barrel supposed to have 4-500 rounds thru it. Scoped the barrel and it looks new.
Started with 23.5 grs of 4198 starting load according to Lee
Bullets are 64 gr Bergers
what neck?
Raise your decap pin and unfortunately, buy some new brass.
Ccrider
Gold $$ Contributor
If you want to know the guns potential, why not use new brass and your best powder option while the barrel is low count?
No way to really tell what the cause is since you don’t know how the used bras has been handled. I have shot cci450, br4 and federal 205/m in my Panda ppcs. Never had any problems, even with hotter loads and loser primer pockets that were not too lose.
No way to really tell what the cause is since you don’t know how the used bras has been handled. I have shot cci450, br4 and federal 205/m in my Panda ppcs. Never had any problems, even with hotter loads and loser primer pockets that were not too lose.
JMayo
Silver $$ Contributor
I'm shooting 450's, fully seated with n133 at 30.6 (hot load) touching lands, shoulder .001 bump, light neck tension
and mine aren't doing that.
Im thinking head space. Easier for primer to blow than bullet going down barrel maybe. Or pocket ground thin.
I don't grind on any pockets.
and mine aren't doing that.
Im thinking head space. Easier for primer to blow than bullet going down barrel maybe. Or pocket ground thin.
I don't grind on any pockets.
That's what I was using initially
So far I haven't uniformed the new brass, but I thought that might have been the problem with the used brass also.
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