Opened it up, cleaned it out. Not bad for dirt, very nice for internal finish and up to the good standards I'm used to seeing from Uberti.
The cylinder hand bound against the arbor, it was just a touch too thick. A few swipes with an india stone on the inside top edge of the hand pretty much eliminated the bind.
The cylinder bolt was peaning the trailing edge of the cylinder notches. A check indicated though the bolt trailing edge was fitted, it was not fitted enough for the bolt head to fully enter the cylinder slots. A few swipes with an india stone on the trailing edge of the cylinder bolt head and it then fully dropped into each and every notch.
The leg of the cylinder bolt that rides the hammer cam had been beveled along its angled edge but not the top edge which must slip up and over the hammer cam. A few swipes with an india stone rounded over the top leading edge of the leg and the movement became quite a bit smoother.
A Wolff wire bolt and trigger spring for the 1873 Model P Colt/Clones was checked and installed.
No other action work was accomplished. Hammer notches and sear face are untouched. Internals were dry lubed with EEZOX and points/pivots that rotate or slide were given a touch of RIG.
With no serious metal removal, the 4+ pound slightly gritty trigger pull is now smooth and crisp 2 lbs 4 oz.