once you start playing with subs the idea is to throw the biggest chunk of lead downrange because you are limited to 1000fps. So whatever caliber throws the most lead is the winner!!
I have been told by every manufacturer of a .45 cal can that firing ANY .458 ammo (SOCOM or *-70), sub- or supersonic will void the warranty. Having said that, I have data showing that muzzle pressure @ 18" with .45-70 is less than @ 5" with .45ACP. But even still, having said that, I would not recommend it.can you shoot 458 SOCOM subs thru a 45 pistol can or do you have to have a dedicated big bore rifle can?
guess I should look into that...