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I used 39.5gr h4895 then had to up it to 40.0gr h4895 (CCI BR2 pri) after installing a Sadlak NM gas piston... Have not crono'd yet... 41.0 h4895 with 155 Amaxes; good. 42gr WW748/#34 good with 175's/168's
Very accurate!
Very accurate!