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The gauge of a firearm is a unit of measurement used to express the inner diameter (bore diameter) of the barrel. Gauge is 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, e.g., a one-twelfth pound ball fits a 12-gauge bore. Thus there are twelve 12-gauge balls per pound, etc. The term is related to the measurement of cannon, which were also measured by the weight of their iron round shot; an 8 pounder would fire an 8 lb (3.6 kg) ball.
Gauge is commonly used today in reference to shotguns, though historically it was also used in large double rifles, which were made in sizes up to 2 bore during their heyday in the 1880s, being originally loaded with black powder cartridges. These very large rifles, sometimes called elephant guns, were intended for use in India and Africa for hunting dangerous game.
Gauge is abbreviated "ga.", "ga", or "G". The space between the number and the abbreviation is often left out, as in "12ga".
Remington Sp-10 semi auto 10 gauge 3 1/2 chamber 24” barrel cones with 3 chokes, the Briley light full in photo and 2 factory chokes. Gun has some of the coating coming off the receiver but otherwise in good condition. I have gone over this whole gun it has new seal and all other parts in good...
Hey all, I recently came into a bunch of random ammo that I’m not interested in keeping. Some of this is “vintage” I honestly don’t know what it’s worth so just make me above-board honest offers based on gentlemanly mutual respect. I’m open to trades, and right now I’m hunting for a HiPower...
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Maybe you are interested in this.
I have a partial box of Western Super X Magnum shotgun shells, 3 1/2", 2 oz , 2 shot. 22 rounds in the box. I want $10.
I also have around 10 loose 20 gauge, 2 3/4" 1oz 6 shot shells I can include...