Only then will you be able to determine whether or not you had enough.
My two hand guns are revolvers, have one upstairs and one downstairs so I wouldn't have many cartridges to shoot. So, I got a rifle with a 25 cartridge magazine.
Having only seven cartridges is ridiculous. Is he going to check every person who has a gun to make sure they don't put in more than 7 cartridges?
I submit this question for consideration, How many enemies of the US, foreign or domestic, criminals and/or tyrants may I shoot before I must reload and how rapidly can I shoot them?
Answer: As many rounds as it takes untill victory is won.