I hate to post this because I'm opening myself up to the naysayers who have never tried it. The 165 grain 30 cal Sierra Matchking on Whitetail and Muledeer flat out hammers them. It fits the bill for what you are looking to do. For a dedicated target round, heavier would be better, but I don't have first hand knowledge on game to advise with the experience I have with the 165-168.
Edited by Smokey Bear (07/28/18 03:00 PM)
Smokey Bear---Lone Star State.