I have mentioned a few times about the Tempest etc trigger tuning. My mate took pics and emailed them to Garvin, who will host them and hopefully add my notes. If he cannot add the notes, I'll add them once the pics are up if that makes sense?
From memory picture 1, no's 1,2 and 3 show the normal contact areas that people polish, (1) being where the sear contacts the piston, (2) where the sear contacts the holding face of the trigger and (3) the holding face of the trigger.
Picture 2 shows where I do the work to reduce the "pause" in the trigger pull.
(5) and (6) are the under side and back of the sear where they contact with the "bump" on the trigger, and (4) is the "bump" on the trigger. By reducing the "bump", you get a smoother pull, with less "pause" in the pull. Polishing the underside of the sear and trying to slightly round off the angled bit at the back also helps. You should be able to get a good idea of how good things are, by holding the trigger in the fingers of one hand and the sear in the fingers of the other and rubbing them together. You will feel less "drag" as you start to do the work.
After that, you can wind out the trigger adjusting screw a little or cut a couple of coils off it as well. I think it really improves things for very little work.
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