I suspect an 1879 Parker hammer underlifter G grade equivalent (I think) with .750 bore diameter that I was shooting with 2 1/2" shells. It has been in the safe for a while waiting for a cast of the chamber. Just have not gotten around to doing it. Too many things to do right now. It is all original and in very nice condition so it won't be changed but it seems important to find out for safety reasons. Thanks for the reply.

Milt

So many guns, so little time!