This question was asked on another board I post on. How much spare ammo do you carry with your concealed handgun? Personally I only carry what the guns capacity is which in my case is between 8 and 11 rounds. Most of the people said they carry at least 2 spare mags and a wonder 9 for a total of about 46 rounds. I am thinking defense and hope to put as few rounds in the air as possible that might hit unintended targets while getting out of a tight spot.