Your load is wonderful and I would shoot it with confidence if I loaded my gun with it. A fine load which will take big game anywhere. But these charts do illustrate the points I earlier made. The 460 is more efficient regarding powder use and more efficient at retaining its energy downrange. There is only one way to tell if the 460 is more efficient at killing game and that would be to give it try.

With 80 grains youget more killing power (marginal i confess) than with the 100 grain load which you prefer shooting. I would also like to make the point that the 460 grain is 21 inches low at 200 yards because it is zeroed at 100 yards. Zero it at 139 yards, and it is 13.87" low at 200. So at 200, we are only talking 5" difference and an inch higher at 75 yards. For me, that is a small price to pay for 25% more loads from a pound of powder using a bullet which only costs 30 cents.

Ifone puts 100 grains of T7 behind that 460 grain bullet, it will flatten the trajectory. Not as flat as your favored load. But it will definitely deliver considerably more energy on game and be little flatter. IF you can stand the recoil, which is also a consideration.

Happy Hunting, Phil