What performance gain from an additional 10,000 or 15,000 psi?

[A5BLASTER]

I thought the weak link was the ar15 sized bolt not the brass. If you want high pressure you would need something like the CMMG Mutant. I believe it has a larger bolt.

And a longer magwell to allow for a mag that allows 2.400 coal min, so one could get enough powder in the case to get it too 62k.