OK, here are some more Aussie loads. All with Lapua .222 cases necked down and neck turned, and Rem 7 1/2 SRBR primers.
21.4gn ADI BM1 with 20gn Nosler shots FBHP 4180 fps ave.
21.8gn ADI BM2 (Benchmark in the US?) with 20gn Hornady vmax 4020 fps ave.
21.4gn ADI BM2 with 25gn Hornady FBHP 3900 fps ave.
When I first had this rifle put together I didn't have much in the way of data to rely on so did a lot of testing with a variety of ADI powders and achieved some surprising velocities (4200-4300 fps with 20gn vmaxes) with terrific accuracy, but for longevity I've toned it down a bit.
Marcus
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