Question: what is the difference between a 12 gauge and 16 gauge shotgun?
Answer: Gauge is determined by the number of lead balls equal in diameter to the barrel that it would take to weigh one pound. In a 12 gauge, which has a barrel diameter of . ... Likewise, for a 16 gauge, which has a barrel diameter of . 662 inches, it would take 16 lead balls to equal a pound.