I have run some of the .380 ARX through a Colt Mustang PlusII. That's a 56 grain bullet, at a claimed 1250 fps. It functioned well, shot to POA at defensive ranges, and had the recoil of a .22. If I were carrying a .380 I think I would use it. I want to try the 9mm in my Shield.

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Wayne
Torn & Frayed