"I've seen well above 2750 in 16" barrels with 75/77gr bullets"

With 75's I have too but not with 77 SMK's. MK 262 is supposed to be loaded as hot as it can be with a powder that is not available to us. My whole deal is to see if something else out there is better. I watched the video armedferret put up the other day on MK262 clone and even that guy is only getting 2750+ with an 18" barrel. Just trying to sort this out like everyone else, guess I'll spend the money on some 2520...

David right now (and I'll probably stick with it), TAC is what I'm keeping on hand.