With the factory made guns, often removing and polishing the nose of the sear and the full cock notch in the tumbler will improve the feel of the trigger pull but it usually doesn't reduce the weight of the trigger pull.
Polishing the top of the trigger blade (the vertical blade that pushes on the sear arm) will also improve the trigger pull and it sometimes reduces the weight as well.
For reasons unknown to me, Pedersoli often uses a very heavy sear spring in their locks.
If you remove the lock from the stock, the sear is the part with the arm sticking out for the trigger blade to hit.
Looking just aft of this towards the top of the lock you will see a U shaped spring that pushes the sear downward.
With the hammer in the "fired" position try pushing upward on the sear arm and you can watch the sear spring deflect. You can also get a feel for how heavy the springs pressure is.
I'm betting it takes at least 3 pounds to move it.
Before I get to altering this spring, you should know that the spring must be powerful enough to engage the sear nose with the notches in the tumbler 100 percent of the time. No if's, and's or buts.
On the other hand, it does not have to have a 3 pound spring operating it to assure 100 percent engagement 100 percent of the time.
This said, If you loosen the screw that holds the spring about 2-3 turns you will then be able to pry the spring away from the lockplate.
As soon as you do, a small tab will disengage from the lockplate and the spring will swivel upward. You can then remove the screw.
If you want to reduce the spring pressure you need to reduce the springs width starting about where the spring bends. At this bend, the lower leg of the spring can be filed to taper it down from about the full width at the U to about 3/32-1/8 at the tip (the part of the spring that pushes directly on the sear). I have never had to thin this leg to less than 1/16 at the tip and I can't advise that you do either. Going that narrow raises the stresses in the spring to very high levels.
When your filing you MUST file ONLY in the long direction of the springs blade. You must NEVER file in a direction that is across it in the thin direction. You also should use the finest file you have to prevent making notches or gouges in the edge of the spring.
When doing this thinning, I usually do a little, then reassemble things and try it out. If it needs more then I disassemble the spring from the lockplate and file some more.
If for some reason the spring breaks after doing this modification you can always buy a replacement from Pedersoli (although their prices are pretty high.)
zonie
