Nobody double-checks a box of 9mm. That is exactly why the top shelf produces a steady stream of avoidable errors — none exotic, all fixable in under a minute. Eight of them, with the fix. Confusing the two .45s 45 rounds is a rimless autoloader round; 45 colt ammo for sale is a rimmed revolver round. They share a bullet diameter and nothing else, and “.45” on a box tells you...