Around my neck of the woods I use a S&W M&P 360 in 357 mag. Use Speer 136 gr Gold Dot Hollow Points, 38+P. I can carry loose rounds in a parts bag should I feel the need for more but 98.9% not. But with the situations going on now sometimes I would switch to my Springfield XDm 9mm. With a 19 round clip plus one in the chamber makes 20 rounds. If I ever needed to go heavy I have (4) more 19 round mags in their belt holsters, with a loaded mag in the gun & one for the chamber leaves me with 97 rounds should it ever get that bad. Lord I hate to think this way, but "CYA" should that time ever arise! It's my only 9mm but it is an awful lot of fun to shoot. Doesn't seem to run out of ammo when your plinking and about a cheap of a centerfire to shoot. Practice! Absolute Key to successful defense.