I usually cross reference loads involving at least two reloading manuals. I take advantage of Online sources for normal facts only. I back off no less than 10% from max when there is a part substitution. Thinking about my stock of primers, I'm least expensive with SPP at just in https://jaredbpanx.tkzblog.com/31678288/the-single-best-strategy-to-use-for-federal-match-ar-primers