Peterson 243 brass

Let us know what you find. I have done some minor experimenting with .308 Winchester using large and small primers but without really testing have not found much difference using Lapua brass.

Ron
 
Unless you shoot in the 0s, 1s or 2s at the most you will not see any difference.

Sadly I am not even down there (consistently, occasional 4 shot brushes and then off to the 1/2 inch races again.)
 
Really, tell you the truth I've never shot in the 0's,1's or 2's but I have shot in the .0's,.1's and .2's @ 5 shot groups. None of those groups shot with factory rifle. Does that pass your test!!!!!!
 
Being a somewhat local company to me, i want them to do well. (100 miles).

But alas have heard very mixed reviews. Supposedly their market is the match crowd.
However i found it surprising that they don't make any brass for 284. This would have opened them up for 6-284, 6.5-284, 284, 284 Shehane.

I also know more than a couple of bench shooters using 6mm Rem.
 
The original reason small primers were used were Palma shooters needed to use some pretty stiff loads to get those .308's out to 1000 yards and the reasoning was the small primer could stand higher pressure without blowing out.

I have a full 100 - 10 Lapua .308 small rifle primer that have over 25+ loadings with no problems. Ten were necked down to .260 just as an experiment. Earlier this year I ordered 200 of the Peterson .260 with the small primer I left 100 virgin and shot the other 100 in 50 round batches. On the 4th reload of one of the batches I experienced a case separation just above the web on one. All 200 cases including the unfired got tossed in the trash.

Now that case separation could have been a fluke or the case could have became damaged but I was not taking any chances and went back to Lapua. I am not slamming Peterson here, I loved the idea of the SRP cases and I was using a load near the top of the chart when that incident occurred. I was also experimenting with 2 different sizing methods at the time and that case could have been getting stretched too much.

Just a warning to keep a close eye on them if you are using stiff loads. I have friends who are using the Peterson as match ammo with no problems
 
I tried a small batch of small primer 6.5CM and found that, for my purposes, the juice was not worth the squeeze.

Higher pressures, going for groups under 1/4MOA, then it might matter. But in my 1/2" guns, there was literally no difference.
 
"If you plan to load above SAAMI max pressure". You shouldn't be reloading. That's marketing BS. The primer size has nothing to do with "fixing" unsafe loads.
 
"If you plan to load above SAAMI max pressure". You shouldn't be reloading. That's marketing BS. The primer size has nothing to do with "fixing" unsafe loads.
Click to expand...

I only shoot out to 800 so my loads are mild to medium and I have had primers back out and leak on cases with less than 10 reloads on them. Mostly on Lake City and Hornady brass.

The point being is that you do not have to exceed or even approach SAAMI maximum to appreciate the small primer pockets.
 
"If you plan to load above SAAMI max pressure. You shouldn't be reloading."

I am not sure that is always true. For example, the SAAMI specs for 30-06 must be safe in a Springfield of WW1 vintage. If you have 30-06 rifle from a good manufacturer, of recent design and recent construction, I think you could safely exceed SAAMI specs for 30-06, if you work up very carefully. I know some reloaders have done that with no ill affects.
 
I have seen more modern guns blow up than I have old ones.

Maybe a newer owner gets bolder or the old rifle owner does not have the velocity bug.
 
This thread started as a discussion about .243. If we were talking only about .243, I would stick with SAAMI specs. That caliber has relatively high pressure specs to begin with.
 
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