They are good in most uses especially when used in the heavier weights for calibre. I do think I read about a few that didn't expand as well. I can't remember exactly but i have used 6.5 140s, and 147s, 7mm 162s and 180s, 308 168, 178, 208s all worked great. I did though only run them relatively slow a max of 2800 fps and as low as 2350fps at the muzzle.
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