although i've never used the pistol bullets in the normal handgun rounds, i've used them in muzzleloading. in 50 cal. they are the 250 gr. 45 cal bullets. from that use, they work perfectly...textbook expansion on the ones that stay in the deer. about half have exited and not found, but they did the job. one of these days i intend on loading these for my 44, but just haven't got to it yet. very happy with the results i've gotten.