#21
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Haven't really read the entire post, Have an awful headache, so if I am off base please ignore and forgive. Had a 20 Tac in a Contender and was seeing a lot of pressure signs.Even Piercing Primers (CCI 400) Use Rem 7.5 now. Backed off a lot, 20% reduced charge. Finally called the bullet maker (Nosler, Hornady) not really sure but it was one of the big ones. They suggested a lot of solution and all were tried. Talked to them several times over a week period. Nothing seemed to help. They (after digging) suggest it could be a copper build up in barrel. I had cleaned regular and did not believe them However a VERY thorough copper cleaning and the problem vanished with NO other adjustment. Went back up to full loads without issue. Just sharing my issue
Safe shooting Doug
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#22
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