Collectible Ammo For Sale. Winchester 203x Vintage Ammunition Win, Western, Peters, Rem. 150-180 Grain JSP Bullets .308 Ammo - .308 Win. Winchester 789x Ammunition Win. Limited Edition & CCI 45 Grain JHP & FMJ Bullets .22 Win. Rim Fire Ammo - .22 WRF. Winchester 1000x .22 Long Rifle Ammunition in Win. Super-X & Wildcat in 2x Wooden Boxes Ammo ...
About 12 Gauge Ammunition A 12 gauge shotgun has a bore of about .73 in (18.5mm) and (depending on the model) fires shells measuring from 2-1/2" to 3-1/2", with 2-3/4" being the most common middle ground. 12ga shotguns are a useful and popular tools for any defensive or sporting purpose, and the 12 gauge ammo available reflects this versatility.