I use an gauge (I like the Hornady) to find max COAL and, if that’ll run through the mag, I start there ie “kiss”. I then choose the propellant which is usually two I have in an 8 lb canisters closest to max FPS for cartridge/bullet before me. I then load 3-shot groups in full grain increments and see what it’ll do.
If those results aren’t satisfactory, and they usually are, I adjust COAL shorter using the loads that gave the best accuracy.
