My thoughts as to why bigger is better. On the 10 it is really about the same as the 45 acp since most comparison is to the slow 230 gr, never have I seen it compared to the 45 app in the 185 or 200 gr +p. My 460 rowland on a Glock 21 pistol gives me the 14 shot 255 gr at 1300 fps but I figure...
Bigger is better, live in grizzly country and carry one of the following, 475 Linebaugh, 500 Linebaugh, 460 rowland if I want a semi 255gr stouter than a 44mag, or 45 colt stouter than any 44mag