Cartridges of the World give max loads of 49 grains of 4895 with the 170 grain and 45 grains with the 198 grain for 2,570 and 2,450 fps respectively. I would probably start at 38 grains (80% of 48 grains an interpolated load) or less of AR2206H with the 180 grain and work up if you want to. Get someone to check the rifle for you first.
GPM
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