Last night I took a new Pietta 1860 Army Sheriff's Model percussion revolver to the range. Overall, I am quite pleased with the gun. Timing and lockup are tight, wood-to-metal fit is excellent, and overall it's a fine looking and shooting piece.
The session was not without it's difficulties, however. A couple years ago I'd made up 50 paper cartridges loaded with a Hornady .454 ball on top of 25 grains of 3Fg Hodgdon Triple 7 black powder substitute, and had half of them left. The T7 came from a bottle that I bought several years ago. I've read that once you break the seal it begins to deteriorate, but up until now I haven't noticed any problems with it.
I loaded the first cylinder with the paper cartridges and I could only get two to go off, even with recapping. So, I pulled the cylinder out, removed the cones on the unfired chambers, and put about three grains of black powder in each using the flintlock pan primer I keep in my BP revolver shooting box in case I dry ball.
Previously, none of the paper cartridges I've made have had ignition problems, no matter if they were loaded with Triple 7 or black powder.
After reassembling the gun and recapping the chambers, all of them went off.
I have 19 of those cartridges left along with a flask full of the remaining Triple 7. The next time I shoot the gun I'll try them with a black powder initiator charge in the bottom of the chambers. I hate to waste powder.
After I switched over to loose ball and Scheutzen 3Fg black powder and a felt wad lubed with pure neatsfoot oil, the gun gave me no more issues. I fired 5 or 6 cylinders full, with all my shots going into one hole at 7 yards. Elevation was dead on but I was shooting a little to the right, which was probably me pushing the trigger a little.
The cylinder arbor was lubed with Lucas white lithium grease. I've found this to be an excellent lubricant for that purpose. After 30 to 36 shots the cylinder was still turning freely.
The other accessory worth mentioning was a slip-on handle for the loading lever that I made from a short section of PVC pipe a little longer than the lever. The short levers on the "sherriff's model" percussion revolvers make seating the required oversized ball somewhat difficult. The short section of PVC made it a lot easier.
Like my 1851 Navy Sheriff, the 1860 Army Sheriff is a fantasy gun. Colt never made such a piece although it's possible that guns could have been so modified by users or gunsmiths. Porter Rockwell, the Mormon Avenger was known to carry a Colt cut down to snubbie length with the loading lever removed and a new front sight fitted.
Regardless of whether short percussion revolvers are historically correct, they are fun to shoot and easier to carry afield than their full length cousins.