I once worked for a gunshop owner in Las Vegas, NM. This guy used a .22/250 for deer hunting, and built himself a heavy-barreled .270 WIN. for shooting coyotes and other varmints. Now, ol' Les wasn't the brightest light in the bushel, but he never failed to kill deer -and I mean BIG mulies like you find up around the Jicarilla Apache reservation..... again, I say read the report on how the .220 Swift worked on wild burrros that's in Ackley's handbook, volume 1. In case anyone doesn't know, wild burrows are about as hard to kill as an elk......