Simonkenton, river runner, and howdy doody;
I, too, have a Pietta 1858 navy remington revolver from about 3 years ago. I was much impressed by the rich blue and overall function of the pistol compared to an early '90s Armi San Marco that I also own. However, the timing is slightly off, but only intermittently (I think when the pistol is cocked vigorously, versus slowly).
The main reason I'm writing this is that the mainspring is VERY stiff, and I'm wondering about the grinding you did to your mainsprings. If I read you correctly, Simonkenton, you ground a bit off the END of the mainspring, the part that rides in the notch on the hammer? Whereas riverrunner ground the SIDES of the mainspring to make in NARROWER and thus less material to cause a stiff spring?
Howdy Doody, did you gring down the flat, long sides of the mainspring, to make it narrower?
I'd like to try the correct technique on my own revolver. The one great thing about CB revolvers, they are cheap gunsmithing projects! The parts are cheap from dixie, and if you mess up, you're only out $150! Much better than grinding on a $700 SIG!
Thanks!
-John C