H1000 is the only powder ever loaded for my 7mm rem mag. Im running 69.6 with a 3.22 coal. This is coal is the same as the trophy grade 160 accubond loaded by nosler. My rifle will dime hole all day this load at 100 yards.
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Last 7mm I built I went straight to quarter minute magnums website and checked out their testimonials and rifles for sale section. They build a lot of 7RM and they post targets along with load data along with the group. Bunch of different options on there.