madcratebuilder
New member
Both my Pietta 1860's are soft, or at least their cylinders are. Both exhibit "smearing" at the bolt notch leedes and both are no more than three or four years old. Neither have seen more than a fraction of the "action" that my cartridge guns have.[/QUOTE
Peening of the cylinder notches is a known issue and can be addresses with proper fitting and timing of the bolt. Some times the bolt spring is has much more tension than it needs. The common fix is the back the bolt spring screw off a turn or two.
This may help.
http://www.theopenrange.net/articles/Tuning_the_Pietta_Part_One.pdf
http://www.theopenrange.net/articles/Tuning_the_Pietta_Part_Two.pdf