well, i'd sure as hell hate a 454 if mine were 4 5/8" long. the recoil diff. b/w 7.5" and a 6" is pretty noticeable. for all around hunting i just haven't been wowed by my .475 linebaugh, though i have it in a short barrel and sold it and will have one in a shorter barrel. in that length every advantage goes to the .475 imho. however, i do love the casull in the 7.5" and 10" models. recoil is stiff and i just really haven't seen a diff b/w 2 100th's of diameter or 30 grains. i don't have a prob getting accuracy with the double tap 400's and they clock >1400fps out of my 7.5" on my chrony but i don't use em much b/c i don't need anything that big. unless i'm hunting big big animals i use barnes bullets, xtps on all deer for rather explosive results. my last batch of 300 gr xtps were chrony'd out of the 10" at an avg of 1940fps. no pressure signs and comfortable, untolerable out of a 6" barrel though. the .475 is my backpacking gun of choice b/c the buffalo bore loads are mild clocking in at just under 900fps but at 420 grains will pen. enough to cover your butt versus anything you'd run into in the americas plus the bfr don't need an empty chamber. i do like expandable bullets and i like a very flat trajectory for unknown distances or quick shots when hunting. for big stuff like elk i spend the money on barnes bullets. i guess if i felt the need in anyway to jump up a caliber i'd go with one of the big smiths. if i did i'd have gotten a .475 or .500 WE instead of my latest casull. however, my son's can very much enjoy the shooting and even at 11 years old my middle boy shoots the casull with a 300gr hardcast at around 850 fps. very very pleasant.