An elk guide I know uses a 300 RUM. He swears by the 180 BT at 3300 fps or so. The BT is, I think, a stout C&C.
I've used the 180BT on several elk out of my 300 RUM. Penetrates very well and kill very abruptly. I can't say the same about the monos I've used out of the same gun.
