Most people who will be affected by recoil won't shoot well. I say 30.06. It's recoil is manageable but at the upper limits for bench practice. Practice is something that is just as important as the caliber. I would also say 308, as its very close to the 30.06 but has less recoil. However, you can shoot 130's to 220's gr bullets in the 06 making it more versatile. I am done shooting anything over 20lbs of recoil because I tend not to practice enough with it.