I don't know what the best Elk cartridge is, but I had an old timer out in Wisdom, Montana tell me a few years back what he thought were the worst. The 7MM Rem and 300 Win mag according to him were the absolute worst, because a lot of the guys shooting them thought they could just shoot in the general area of an Elk and it was supposed to fall dead. He said he and his buddies spent more time chasing Elk wounded by them, than any others. He used a Swift with 70 gr Speers IIRC.
