Nitrox,

I think you are on the money with that.

Daryl,

Funny, but when I shoot my 458wm double at game, there is no muzzle rise either.

I've seen myself on video shooting elephants and there is just no muzzle rise. When I shoot for practice, I rock and roll and there is muzzle rise though. I think it is being keyed up, similar to not hearing a lot of the report or feeling the recoil.

I've seen the same "phenomenon" watching African DVD's. For instance, when PH Andrew Dawson stops a charging ele in Boddington on Buffalo, there is no muzzle rise, same when he shoots at a buff. The infamous MS suffers from little muzzle rise, especially given the big NE's, 577 and 600 he is often shooting.

JPK