I believe in stocking up on ammo... 1,000 rounds per common rifle (7.62x39, 7.62x54r, .30-06, etc). 500 rounds per uncommon (.303 Brit, 7.5 Swiss, 8mm, etc). 500 rounds minimum per shotgun. 1,000 rounds per common handgun (.40s&w) and 250 rounds for uncommon handguns (7.62Nagant, 7.62x26, 9x18...