Minimum for every one should be at least one spare mag in case of failure of the mag in the gun. Be Safe,
Eight total, one in the chamber and seven in the magazine of my M&P 40c. The magazine is marked as having a capacity of ten, but I have been told it will last longer if it is not filled to capacity.
Only carry what the weapon holds. Wondering for concealed carry if we had to go to court. Will they say since you have the loaded weapon and a spare mag your looking for a fight.
You would not have to be running if you had a spare mag or 2. Fear of Rambo complex? I was driving and started hearing a strange noise, the noise was my 40 cal cartridges falling out of the magazine. The base plate broke and emptied on the floor. You might say what are the chances, I do not know, but It did happen to me. Also a I stated above a minimum of one spare mag. Went on a Montanna bear hunt 9 years ago, 2 rifles, same make, model, caliber, scope + 6 mags. Each mag was cleaned and checked with live fire in both guns, perfect. We drove so no baggage handlers. Went to check zero and the mag would not feed, though it worked perfectly 48 hrs before? Why? Always need at least one spare mag, for rifle, pistol, shotgun, other wise you may have only a single shot or a rock. Be Safe,Only carry what the weapon holds. Wondering for concealed carry if we had to go to court. Will they say since you have the loaded weapon and a spare mag your looking for a fight. My thinking is if I had a spare mag with me how would I load it running the other way. Picture this a 6 ft. 185 lb. 75 year old running trying to reload while wetting his self. I'll just go with my 8+1.
When I was young pilot ,an old WW2 attack pilot told me " There are two things that do you no good, the fuel you left on the ground and the runway behind you." Always go to END of the runway and takeoff with FULL fuel. Same should be true with EXTRA Mag(s)/ammo.
On my first trip to THUNDER RANCH, Clint Smith said "In a gunfight you never know how many attackers there are and you never know how much ammo they have , always carry extra ammo".
And that is what I do, every day , every where.