264 winchester Magnum
I never had a problem killing Elk with this caliber. I shot Elk from 50 yds up to 500 yds and never lost an elk. I use 140 grain XLC IMR 7828 65 grains getting 3,300 fps. I love this round the only thing is never recovered a bullet. I'm going to try the 130 Gr. Berger VLD this coming season see how they do.