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Oven heat treated/wated cooled in 44mag. & 45acp leave a lot of nasty looking stuff in the barrel for me. But accuracy remains the same with many rounds fired. Not real leading. Air cooled with the proper alloy is the way to go if you want a clean looking barrel. Add linotype to your WW & scrap lead. Try for a BHN of 18 containing 2% tin or more.
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