I have one. I load low pressure (6500 PSI)smokeless 10 gauge for it using PB powder and 1 1/4 oz shot. Black powder is such a friggen mess. Look carefully at the wrist section for cracks. I paid a negotiated $750 for mine and it is a twist barrel with some case hardening showing in protected areas. From what I have read, Colt had the barrels imported but built the rest of the gun state-side. The 1878 shows up common on auction sites and sometimes part guns are avaiable also. I don't know if any of the TNT repro guns have parts that interchange. I have shot trap with mine and its a crowd pleaser but I struggle to hit 17 with it and I can shoot about 23/24 with my model 12.