There's a reason why very few police forces issue frangible ammo for daily carry - and it isn't price, since the officers don't pay for it!
Back around 1980, the Justice Dept. did a study on handgun stopping power - and found the 125 gr. JHP in .357 was tops. It also found that ordinary wadcutters gave best stopping power from snubbies - due to muzzle velocity being too low for reliable expansion of hollowpoints.
I'd suggest Speer Gold Dot jacketed hollowpoint instead of frangible ammo. It feeds quite reliably in semiautos. The price is reasonable - and it also provides enough penetration should you have to shoot at an intruder who suddenly ducks behind an inside wooden door of your home.
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I'll stay with MagSafe for carry but should I ever move to another climate, I'll consider foregoing them in favor of Golden Saber or the ever reliable Hydra-Shok. In fact, I even have about 500 rds of that EVIL "BLACK TALON" in .45 ACP which is about the ultimate out of a Commander or Government model, but I'm not so sure it would develop enough velocity out of my Glock M30 or my ParaOrdnance P10 to expand reliably. Anybody know anything about that?