Around 18 months ago I did a couple trigger jobs on some of my S&W revolvers. They turned out well and I had some rebound springs left over. so I ordered a few mainsprings and went to work. First up, my model 442,J frame. This gun had a 13.25+ pound trigger pull, but it was smooth feeling enough that the pull weight surprised me. I have only run maybe 500 rounds through it. I tore it down and inspected the hammer & trigger for signs of rubbing. Found a rub spot on left side of hammer where it was rubbing on the bolt. Bolt was a bit high so I sanded & stoned it down. I polished the rebound slide, breaking all sharp corners and reinstalled it with a 13 # spring. I then reassembled with a Wolff Reduced power mainspring. This resulted in a very slick, 10.6 pound trigger pull. This is right in line with what I was hoping for. My unmodified but having been fired 4000, times model 638 has a trigger pull of 10.8 pounds, so now they feel closer to the same. I may polish the RB slide in it and drop in a 14# rebound spring I have on hand to see if I can get them even closer.
I took the 442 out for a function test a couple days ago. I shot a few different rounds including reloads with CCI primers and everything fired. Its about perfect for pocket carry now
I took the 442 out for a function test a couple days ago. I shot a few different rounds including reloads with CCI primers and everything fired. Its about perfect for pocket carry now