Is 12 bore the same as 12-gauge?

The smaller the gauge number, the larger the shotgun bore. Gauge is determined by the number of lead balls of size equal to the approximate diameter of the bore that it takes to weigh one pound. For example, it would take 12 lead balls with the same diameter as a 12-gauge shotgun bore to weigh one pound.

What is the bore diameter of a 12-gauge?

18.5 mm
A 12-gauge shotgun, nominally 18.5 mm (0.73 in), can range from a tight 18.3 mm (0.72 in) to an extreme overbore of 20.3 mm (0.80 in).

What is the diameter of a 20 gauge bore?

15.6 mm
The 20-gauge shotgun, also known as “20-bore”, is a type of smooth-bore shotgun that fires a shell that is smaller in caliber (. 615 in (15.6 mm)) than a 12-gauge shotgun (….20-gauge shotgun.

20 gauge
Bullet diameter .615″ (15.62 mm)
Shoulder diameter .684 in (17.37 mm)
Base diameter .697 in (17.70 mm)
Rim diameter .766 in (19.46 mm)

What caliber is 12-gauge?

For example, a typical 12-gauge shotgun slug is a blunt piece of metal that could be described as an 18 mm (. 729 inch) caliber that weighs 28 grams (432 grains).

What is a 28 gauge shotgun used for?

28 Gauge – In popularity, the 28 gauge shotgun ranks third. It’s a lightweight firearm with a modest recoil and is best used for upland and small game hunting. Although ammunition isn’t rare, it’s not as readily available as ammunition for 12 and 20 gauge shotguns.

What gauge is a slug?

12 gauge
Common 12 gauge slug masses are 7⁄8 oz, 1 oz, and 1 1⁄8 oz, the same as common birdshot payloads.

Is there a 1 gauge shotgun?

Is there a 1 gauge shotgun? Yes, there were single barrel one gauge punt guns that were used to take out entire flocks of birds at once.

Is there a 4 gauge shotgun?

The . 410 is named for its nominal bore size, and is not a gauge at all. A 4 gauge shotgun would have a diameter of 1.052″. Compared the 12 gauges .