4227 has and is my favorite powder for magnum loads . I always , always , always use full magnum primers . My powder charge varies with the design of the bullet . Simply put , I fill the case at least to the base of the bullet or slightly compressed . This advice given to me years ago has always done well for me . Regards, Paul
Last edited by cowboy4evr; 09-05-2019 at 09:02 PM.
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