The bore diameter of a 10 gauge is .775 inches. For reference, a 12 gauge has a bore diameter of .729 inches. Outdoor Life conducted a 10 gauge vs. 12 gauge range test in 2021 and the results showed ...

Bore Diameter: 12 Gauge vs. 20 Gauge. The larger bore of the 12 gauge can accommodate more payload when stuffed with shot, but this becomes a moot point when dealing with a single projectile.

10 gauge. Bore diameter: .775 inches. The 10 gauge is essentially on life support in the world of American wingshooting. Few companies make guns or loads for this gauge anymore. You can still find a ...

20 Gauge Bore Diameter: .615 inches. 12 Gauge Max Chamber Length: 3.5 inches. 20 Gauge Max Chamber Length: 3 inches. Understanding Payloads. Shooting TSS complicates the payload picture.

28 Gauge vs 20 Gauge Bores and Loads. A 20-gauge has a bore diameter of .615 vs the 28-gauge’s .550, and that .065 difference in diameter means the 20-gauge holds more shot than a 28-gauge can ...

A Dial bore gauge is also known as comparator gauges. You set the bore gauge to a known standard or diameter. Most budget guys use a micrometer, but for highly accurate work, you can purchase (for ...

The dial bore gauge and crank journal micrometer are two tools that every engine builder should have. ... The gauges find the maximum inside diameter of an object and lock in place.

Blair said licensed firearm owners will still be allowed to own 10 and 12 gauge shotguns — even if the removal of a 'choke' means the bore diameter of the firearm exceeds 20 mm.