Killed my first elk in 1952, with a 44-40 lever gun don't remember how many elk and mule deer I killed with the 44-40 it was kinda like hunting with a bow you had to be close.

As I remember I bought a 270 model 721 around 1958 + or -
150 gr. coreloke worked real well on mule deer and elk, and I didn't have to get as close, only reason I bought a 270 was the guy at the hard ware store said it would shoot faster and flatter than a 30=06 and all my friends had 30-06's.

nothing has changed since 1952 when it comes to killing elk,elk have not gotten any tougher, it does not make a hell of a lot of difference what you shoot them with if you can hunt and shoot. Rio7