Tight SR primers or small pockets?

[rogn]

Last batch of 47L brass Ive gotten seems to have not small rifle pockets but teeny SR pockets. A batch of Peterson brass used the same dies I guess or same dimensions. BR4, R 7 1/2, CCI 41 and one other took a 4# hammer to seat well. It put the imprint of the priming punch in the metal. Mostly seemed to deform CCI primers. Found a long list of threads regarding tight SRP and one had a list of specs. Well the Federal line of SRPs are a tad smaller than everyone elses. Ive been trying to get some CCI 450s without luck. I had a brick of the Fed 205M AR primers on my cart with an online supplier and of course they disappeared before I clicked.
My LGS, Wink's had 400 205M ARs on the shelf so I took them home. They solved 3 problems. They seated firmly without a hydraulic press, the ES virtually disappeared and the fired primers looked so normal it scared me. They are a match primers designed to cope with the abuses of over loaded ARs.
It might be worth a try especially if you cant get the 450s. I'm pleased.

 

[Hohn]

I have 450s and cannot obtain the Fed AR primers. Would love to try them.

 

[mdram]

Last batch of 47L brass Ive gotten seems to have not small rifle pockets but teeny SR pockets. A batch of Peterson brass used the same dies I guess or same dimensions. BR4, R 7 1/2, CCI 41 and one other took a 4# hammer to seat well. It put the imprint of the priming punch in the metal. Mostly seemed to deform CCI primers. Found a long list of threads regarding tight SRP and one had a list of specs. Well the Federal line of SRPs are a tad smaller than everyone elses. Ive been trying to get some CCI 450s without luck. I had a brick of the Fed 205M AR primers on my cart with an online supplier and of course they disappeared before I clicked.
My LGS, Wink's had 400 205M ARs on the shelf so I took them home. They solved 3 problems. They seated firmly without a hydraulic press, the ES virtually disappeared and the fired primers looked so normal it scared me. They are a match primers designed to cope with the abuses of over loaded ARs.
It might be worth a try especially if you cant get the 450s. I'm pleased.

winks? my local is the same, we must be neighbors
anyway, i just picked up 1k fed ar match primers from them last week
they were in the back room, had to ask for them
they had an entire case, i may go get more

 

[47WillysGuy]

Last batch of 47L brass Ive gotten seems to have not small rifle pockets but teeny SR pockets. A batch of Peterson brass used the same dies I guess or same dimensions..

I have found Peterson brass to have very tight primer pockets. Once a case is fired, the pockets open up for easier insertion of new primers, I had about 20 of a 100 that failed to fire that wasn't seated deep enough in 6MM. I use CCI 450 primers. Good brass, tho!

 

[rogn]

winks? my local is the same, we must be neighbors
anyway, i just picked up 1k fed ar match primers from them last week
they were in the back room, had to ask for them
they had an entire case, i may go get more

They only had 400 on Tuesday, or thats all Timmy found.

 

[mdram]

They only had 400 on Tuesday, or thats all Timmy found.

wow, i was there saturday, and they had just opened the case, i believe it was jaime

 

[Jeffrey Tooker]

I have found Peterson brass to have very tight primer pockets. Once a case is fired, the pockets open up for easier insertion of new primers, I had about 20 of a 100 that failed to fire that wasn't seated deep enough in 6MM. I use CCI 450 primers. Good brass, tho!

This is the same problem with new Lapua 6 BR Norma/ 220 Russian brass and Wolf/Tula SRM primers. No misfires as long as primers are fully seated. I usually use RCBS "O" press to load primers the first time. It is easier after that.

Jeffrey

 

[PopCharlie]

Peterson brass does have tight primer pockets. I believe they say this in their documentation.

 

[JFrank]

This is the same problem with new Lapua 6 BR Norma/ 220 Russian brass and Wolf/Tula SRM primers. No misfires as long as primers are fully seated. I usually use RCBS "O" press to load primers the first time. It is easier after that.

Jeffrey

Curious to know if the Wolf primer is different measurement then CCI primers, as I normally use a K&M hand primer tool without issues even on new Lapua BR brass your post caught my attention.
Thx
J

 

[Jeffrey Tooker]

Curious to know if the Wolf primer is different measurement then CCI primers, as I normally use a K&M hand primer tool without issues even on new Lapua BR brass your post caught my attention.

I have never measured Wolf SRM primers. I know they have harder cups, as they are magnum primers. I still have quite a few from the last time we had a component drought. They serve me well as long as I seat them properly. You can measure primers against Wolf SRM's. However it may be a case of softer primer cups swage more easily.

Jeffrey
Thx
J

 

[Jordan Wickham]

Alpha Brass is tight as hell too. Running a primer pocket uniformer fixed alot of it but still had a couple that if I didn't triangulate the perfect primer trajectory into the pocket would smash them. Lost maybe 10 primers the first round on the first 100 then figured out. On my case prep center the primer uniformer had about 10x the amount of brass compared to any other process including my trimmer.

 

[ronemus]

I'm working with some new Peterson .338 Lapua, and it's very tight with Federal 205 Magnum Match. It will probably take a few firings before I dare try anything else.