A heavier, ruff trigger pull isn't conducive to good accuracy, but we can
lighten and smooth the trigger with the use of stones and a fixture, let's take a look.
Before doing any work on the trigger I like to insert some snap caps
and check the trigger pulls. When working on the double-action pull, we're not
looking to lighten it as much as smooth it out. The single-action pull is
generally pretty smooth but, we can lighten it to suit our preference.
A Lyman trigger pull gauge is handy for measuring the trigger pull weights. This
gun average is about three pounds 11 ounces for the single-action pull and
eight and a half pounds for the double action. I'll remove the side plate to
give us a better look at the surfaces we need to smooth. For a detailed
explanation of this process refer to the chapter on disassembly and lubrication.
Here's the location of the single action engagement surface while the double
action surfaces are located here. For safety reasons we never touched the sear
surface on the hammer. To lighten the pull will polish the trigger sear. This
is the Power Custom stoning fixture. Through the use of interchangeable
adapters we can use this fixture to maintain the proper angle on the hammer
and trigger sear surfaces to slick up a variety of firearms. Notice the narrow
surface I have to work with. This fixture will precisely index a polishing stone
so that we can move it back and forth polishing the surface. The fixture's
adjustable, allowing us to move the roller guide to change the weight of our
trigger pull. I'll start with the medium India stone and finish with a fine. A bit
of dykem makes it easy to monitor my progress. Whenever using a polishing
stone it's important to use plenty of honing oil.
Now I carefully move the stone back and forth frequently checking my work. Once
all the dykem is removed we should have a nice smooth surface. After adding more
dykem I switch to the fine stone. Remember I'm just trying to smooth out the
surface, pretty good. Smoothing up the double-action pull is
quite a bit easier. We need to address the trigger nose and bevel located here,
along with the bottom of the double-action sear located on the hammer. After
adding some dykem to the trigger nose I begin polishing using the medium
stone. I'm just lightly polishing the top of this surface using short smooth
strokes. It's important to smooth the radius on the edge of the trigger nose
as well. Once the surface is bright and shiny I add some more dykem and finish
by polishing with a fine stone, that looks pretty good.
Lastly, we need to address the double action sear. To prevent damage use a
bench block for support when removing it from the hammer, we just want to smooth
up the bottom of the sear. Lightly stoning it with the fine India stone is
all it takes, it should be smooth and free of scratches. Now we can reassemble
the revolver and using the snap caps measure our results. The single-action
pull now averages right at three pounds and the double-action pull is
quite a bit smoother averaging 8 pounds.