Gauge was determined from the weight of a solid sphere of lead that will fit the bore of the firearm and is expressed as the multiplicative inverse of the sphere's weight as a fraction of a pound, …

Here's what you need to know about shotgun gauges, to include the differences between 10 gauge vs 12 gauge vs 20 gauge and other popular bore sizes.

A 12 gauge shotgun has a 0.725 inch bore diameter, but the “12” is calculated in a different way. The 12 refers to how many lead balls of size equal to the bore diameter (so 0.725 inches …

Jan 31, 2020 · A 12-gauge shotgun’s bore is between 0.720″ and 0.740″ so the terms “12 bore” isn’t actually correct even though it was a common term until recently. The chamber refers to …

Jun 16, 2022 · I’ll spoil the ending and tell you it’s the 12 gauge. The 12’s larger diameter means you can shoot whitetail with larger slugs and buckshot for more reliable kills. It offers a wider …

Oct 18, 2024 · Ever wondered why the internal bore dimensions of 12 bore shotguns vary? These differences are not random—they play a significant role in how your shotgun performs and …

The internal diameter of a 12 gauge shotgun barrel is therefore equal to the diameter of a lead ball weighing 1/12 pound, which happens to be .729" (Or in British: Bore.) .410 is not really a …

Feb 5, 2025 · The New World refers to 12-gauge shotguns but they are more accurately 12-bores. The term originates from muzzle-loading days, when the diameter of a number of pure lead …

Feb 17, 2024 · The term “12 gauge” refers to a shotgun that has a bore diameter of .729 inches, meaning it takes 12 lead balls of equal size to weigh one pound. Gauge does not directly …

The cylinder bore of a shotgun is the diameter of the opening at the end of the barrel. In a 12-gauge gun, the cylinder bore is 0.730 inches. The bore sizes of other common shotgun …