If I was going to try one, I'd be inclined to try the 180 Scenar myself. I know 30338 on here has done real well with them on elk and he puts up plenty of proof they'll smash stuff pretty hard and man, they aren't picky about shooting excellent. I should grab a box and just load them up and see what happens on the Mashburn. They aren't 180 ELD sorta BC but I think they are .660'ish which aint too bad either.

Semper Fi