If I'm shooting sub moa with a 7mm Rem Mag, shaving maybe another 1/4" off with a .243 or a 6.5 Needmoor isn't going to help me kill anything. But I can't speak for everybody. Like I said my case is unusual. I was started on a .30-06 and 180 Remington Green Box right from the beginning. When I shoot a light rifle I always feel like something is missing. Much like a flat chested woman.