Rifle, i trust your judgement,though i still think even with a flat nose or a keith style bullet that it would work best in most cases,not all,if the lead was as soft as possible.Not nessesarily pure lead but still on the soft side anyway.And i am talking for deer and normal size hogs, most times 200lbs or less.So ideally if i can come up with some kind of custom mold for my walker with its 1 in 18 twist barrel, maybe something from 225 to 260grs. with a wide flat nose a cpl of grease grooves and a flat base with a rebated base so it starts straight and a cpl thousanths larger than my bore dia? With 45 grs of T7 behind a 250 or so grain bullet it should still be rather potent. I know a ROA is better set up for this from the get go but i no longer have one of those and i do like playing around with the walker anyway. I have slicked up the insides of my walker,done a trigger job on it to suit me,added a spring/plunger for the cylinder hand, made a new cylinder bolt out of 416 stainless that locks up way better and if i can come up with some great slugs for it that do like i want,this thing may even get drilled and taped for a mini pistol holo sight so i can see to shoot better when the lighting is not so good.I have the stock sights so they work very well in normal daylight,they work as well as sights on a ruger blackhawk, and i would not have a problem getting them to shoot point of aim with whatever ends up shooting well in it.