In a 20" 1:9 twist im shooting Hornady 75HPBT 's (just on the lands) on top of 25.3 / 25.5gns of RL15 with a CCI 450 Magnum primer. It's a stout load so work up with caution. I have shot several 2" groups at 500yds with this load. Shoots consistant high .3's / low .4's at 100yds.
With that being said, my 100yd load is 69 SMK's (just touching the lands) on top of 25gns of RL15 and 450 primers. Shoots high .2's / low .3's at 100yds but opens up past 350yds. Thats where the 75's come in at.
This barrel will not shoot the 75 A-Maxes at all. Whats funny is, I have a 26" barrel thats just the opposite.
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