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Ultimate Member
Are ALL 147g commercial loads subsonic? My conversion program lists Mach 1 at 1087 fps, and the Federal site lists these hydrashocks at 1000 fps at the muzzle, which would make them subsonic. Is that generally the case?
yes, that is a nice physical barrier in 9mm bullets. 147 grain hit hard and can't break that sound barrier. You really should only use 147grn with a suppressor, there is no reason otherwise. Unless you really do not want over penetration or expansion.
115 and 124 are good for defense because they travel fast, can penetrate and have the velocity to get expansion.