I mainly use the 300 WSM, and it is my "go to" rifle. I don't hunt elk, mainly deer and hogs with the Hornady 165 gr Interbond. A 350 - 400 lb hog as a very thick gristle plate, lots of mud and dirt along with heavy, tough bones. I get more one shot drops with the IB than any other bullet I've used.

A 165 or 180 gr Interbond, Accubond, Partition, TSX or similar bullets should work well on elk