OBSERVATION: For every 10 thousands of an inch (0.010") you add to a strain screws length, you add about 1 pound of weight.Īfter repeated tests (with all other variables remaining unchanged) and using a Lyman trigger gauge I was surprised to find this relationship to be quite consistent. I did this by making up several different strain screws (using 8-32 hex head machine screws) in 0.010" increments, and then experimenting with them at the range to find the shortest one that gave 100% reliability. Ultimately, it appears shimming the hammer was the key to solving the light strike issues (trial and error is involved in determining the shim number and left/right order), but once the hammer was free of binding, I needed to find the optimal strain screw setting. I've recently been tuning my new PPC revolver to get rid of the dreaded light-strike while also minimising trigger weight (i.e. I thought I'd share a tuning observation with the group that might help somebody out.
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