Ten-gauge

10-gauge

(ˈtɛnˌgeɪdʒ)

n.
1. Also called 10-gauge shotgun. a shotgun using a shell of approx. 0.775 in. (1.97 cm) in diameter.
2. this shell.
References in classic literature ?
It was for this purpose that Sagawa had carried the ten-gauge shot-gun.
Ten-gauge 3 1/2-inch and un-crimped hand-loaded 4-inch shells were the cat's meow in terms of working with these big plastic tubes.