If you look at Hodgdon's data, comparing IMR 3031 and IMR 4895 you will see they get about the same velocities, but it takes about 10% more IMR 4895 to get there. So it's less efficient, will likely leave more fouling residue behind, will increase recoil and may produce more velocity spread, not to mention costing more per shot. If you want higher performance, take a look at H4895. It is known to work better at lower pressures than the IMR version, and Hodgdon's site shows it getting higher velocity so at least you get something out of the added recoil.