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but if someone is suggesting that it makes it safe to push 75,000 PSI because the primers hold, I would disagree with them.


Not doubt, and I would bet they are running hotter than 75K at those speeds they list.

I don't see a little more soft metal brass around the small primer hole as being THE factor for these pressures they claim are safe.

"I run Lapua brass with small primers holes therefore I can run pressures at 75K to 85K" and I still have my face intact".

What a deciption,

I want nothing of it.