Grant
posted this
27 March 2010
Pieta specifies .454” balls. I have used .451", .454" and .457". The .451” seem to give best accuracy but, as previously pointed out, chain fires are more likely. I will probably stick with .454” balls when I run out of .457” balls.
If you have a Pieta, note that the chambers are bottle shaped. The powder must be settled down well in order to get consistent velocity. Before I learned this, velocity ranged from 200 to over 1,000 fps with 28 grains of FFFG.
Also note that anything like accuracy requires that the barrel be cleaned after each string. I also have to clean and lube the cylinder pin of my Pieta 1858 after each string. Otherwise the cylinder pin becomes very difficult to retract. My only other cap and ball revolver is an original Colt, and it is not necessary to clean and lube the cylinder pin, it being entirely different in design.