Quote:
JohnKSa
Unless the action starts to yield.
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The 6mmBR case head is much stronger than the OP 308 case.
The 308 primer pocket will become loose somewhere between 72kpsi and 78 kpsi [unless it is Lapua Palma small primer pocket brass]
The 6mmBR brass will not give up the primer pocket before the thickest small rifle magnum primer [CCI450] will pierce. That happens somewhere between 80 kpsi and 90k psi.
I have reached that with the 1917 Sav99
That threshold of primer piercing is dependent on the firing pin to firing pin hole fit. GreTan offers a service of bushing the firing pin hole to get that threshold higher.
But I would bet money no one has sent GreTan and old Sav99 bolt to bush
