Hello, tom e gun. Back in the mid 70's I purchased a Shilo Sharps 1863 percussion rifle in .45 caliber. I wanted the .45 over the .50 or .54 for better bullet selection..and possibly less recoil. The percussion rifles..at least the military version hold a max. of 60gr. black powder.
Yes, they are a "paper cartridge" gun..the originals used treated linen.
I make my ctgs. from treated tracing paper..a super solution of pottasium nitrate (saltpeter) is used to soak paper. I have used cigaret paper for base.
I'll never forget the time I was shooting at 100yd. range, young guy came over..didn't say a word..but was watching. I loaded paper ctg., cocked that big hammer back & placed musket cap on nipple..and fired. Opened breech..blew thru & loaded another round. About the third time I did this he said to me with eyes the size of dinner plates..."how'd you do that?? Where's the case?
I sent mine back to Shilo for fitting early percussion/ctg. style tang sight & dbl. set triggers.
Making the paper ctg. is time consuming..but you can make a bunch on rainy days..or wintertime..at least there are no cases to wash black powder fouling out. And they can be fired with loose powder..by breech seating bullet in throat & filling chamber with powder.