Quite frankly, I'm totally unfamiliar with the 460 and it's power level. However, real heavy bullets aren't required, but heavy does help accuracy. A 340 gr would be great, driven at about 1400 fps if an LFN, which is the nose form I would recommend. That weight is about optimum for the 454 when max power is wanted. If you don't mind the recoil go heavier.
