Barrel break in loads were with varying charges of 8208XBR: 21.0, 21.4, 21.8, 22.2, 22.6, 23.0gr, new Lapua brass, CCI400s, and 77gr SMKs.
The load in the other image was with 23.4gr of Varget. Lapua brass on the left and IVI brass on the right, both fireformed and fully prepped. I get the...