8.2 works well in .45 Colt, under a 255 cast, same in .44mag, about 890fps.I haven't used it in the others but 4.8 under a H&G 68 clone works very well in .45acp, clean, soft and accurate. Good practice load, but expensive, and too hard to come by so I save it for .45 Colt.
I feel sure it will...