While I love to tinker with more exotic rounds, out of those three choices it would have to be the ubiquitous .30-06 that is sitting in my safe right now. Steyr Model M Professional with a Kahles 6x42 scope in Warne QD mounts. It shoots exceptionally well with just about every load, factory or handloads, and absolutely loves the cheap Federal American Eagle and Federal Power-Shok ammo. I can’t beat their 1/4” groups with my handloads.

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Guns don't kill people, it's mostly the bullets