I do a lot of repairs to cap and Ball pistols and I have found that there are common problems that crop up with the Pietta guns. #1 is the problem of undersized chambers. The 36 guns run about 368 or so and the bores are 375. This makes them hard to load and usually gives then poor accuracy. The same for the 44's as I have a new Remington with .446 to 448 chambers. I use a fixture on the mill to ream the chambers to either .375 or .450 on the nose and all the same and it does wonders for accuracy. Couple this with a polished forcing cone and you have a real all day shooter that loads paper cartridges like a champ. By contrast Uberti guns have all been right on the money for chamber size.