Hi, I recently purchased a Pietta 1851 in .44 caliber. There isn't much more of a cylinder to barrel gap of ~1-1.5 thousands of an inch. IMO that's not a problem for cap and ball, but I am having a problem using my 1860 conversion cylinder with this revolver. There is zero gap with the conversion cylinder and barrel where the conversion cylinder binds. I tried two other 1851 barrels that I have (7-3/8" and 4.5") where there is slightly more clearance, but there is still binding with the conversion cylinder. Those barrels are perfect when installed on an 1860 Army with the conversion cylinder so I don't want to modify them.
The question I have is how to increase the barrel to cylinder gap on my 1851 Colt? Do I just use a file or is there a more elegant method to produce a perfect gap keeping the barrel end square to the cylinder face so I could use my 1851 with the conversion cylinder?
Any ideas would be appreciated.