I would like some suggestions on the best cartridge that will do all the things I want. I want the most accurate, best-barrel lived, and least recoiling cal. that will reliably kill Elk ( or smaller critters) out to 600 yards. I will be target shooting this rifle quite a bit as well, though not competitively. I'm not a fan of muzzle breaks and am a left-handed shooter. Thank you in advance for your thoughts and suggestions! " If I can see it, I can hit it.....and I can see pretty well."