The only factory ammo I've been able to try was 40 rds of HSM 300gr SMK..... accuracy was poor (1.5 moa) with it as well.
Since then I've been trying to find a hand load I'm happy with.
300 gr berger hybrids- I've tried .030 (2 5rd groups shown below) , .050 & .075 off the lands
90.1 grs IMR 7977
Federal magnum primer
Lapua brass
Today across 10 rds I ran an average of 2739 fps with an ES of 19fps and an SD of 6.7..... very happy with velocity but you can see these 100 yd groups are brutal. the flyer on the right dot up by itself was my first round.
Really hope I can figure out what's up as right now I'm really scratching my head.
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