FWIW I load 308 for a young mate, 150 SSTs over AR2206H after advice from this forum to emulate Hdy, Factory Superformance with same 150gn SST. He has a 16 in, X-Bolt, Superlight, suppressed. Using his once fired Hdy brass he is shooting near touching groups of 3 at 100m, 3 all adjacent to each other on a 6in gong at 300m. Wish I could shoot as good. On my old chrono they average around 2730fps.
Bookmarks