.30 Gov't '06 pushing a 165gr Nosler Partition @ 2,750 fps, in a (you guessed it) Pre-War Winchester M70. That combination has provided nothing but one-shot kills for my brother and me over the past 30 years, at distances from 50 feet to 175 yards. With Winchester and Remington factory loads, it provided similarly excellent service for my father and his brothers for the 25 years before that. Dad bought it second-hand when he got back from Korea. Just got it back from a complete buttplate-to-muzzle restoration, and hopefully this combination will provide many more decades of service for my sons once they get old enough to play this game.