Educated Guess on Starting Load

[SAWMAN]

Couple of thoughts/considerations . . . .
* The bullets that you mentioned have an extremely long bareing surface. This will increase pressure most likely depending on the twist rate of your barrel.
* The 500S&W,460S&W,and chamberings that use the brass are capeable of 60,000psi.
* I am not sure what 60,000psi will do in an AR action with that much case head thrust.
Stay safe. --- SAWMAN

[BradyT88]

Couple of thoughts/considerations . . . .
* The bullets that you mentioned have an extremely long bareing surface. This will increase pressure most likely depending on the twist rate of your barrel.
* The 500S&W,460S&W,and chamberings that use the brass are capeable of 60,000psi.
* I am not sure what 60,000psi will do in an AR action with that much case head thrust.
Stay safe. --- SAWMAN

It's like 1:23 or 24. It's a bit slower than the Mode 500. I know Big Horn Armory proof tests the rifles at 90,000 psi, but that doesn't mean that can regularly handle that kind of force.

The AR doesn't have a cylinder gap to relieve some pressure though I think that when guns go boom they over pressure before the bullet has even left the case so that's probably neglible.

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