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You should be using reliable load data from reputable sources. One choice are all the books published, such as Lyman, Hornady, Lee, etc. Another source is the online data from powder companies, like Hodgdon's, Ramshot, Accurate, etc.

All of those sources will tell you the primer type for the published load. You should rely on published sources before Internet forums.

I hope you have some reloading manuals? Your .308 primer question was answered, but you will still have additional information needs.

Best of luck, and it is nice to have another reloaded joining the group.