The Wing-Shok Pheasants Forever High-Velocity line of shotshells from Federal Premium come in both 12- 16- and 20-gauge sizes and achieve a muzzle velocity of 1500 1425 and 1350 feet per second respectively. Simply put these high-velocity shells are the serious bird hunter's best friend. Not only do these shells achieve an impression muzzle velocity but they also feature a super-hard copper plating that delivers the deadly combination of decreased feather draw tighter shot patterns and extra-deep penetration. If you are in the market for a high-velocity shotshell for hunting grouse quail rooster or other game birds look no further than the Wing-Shok Pheasants Forever High-Velocity line of shotshells from Federal Premium.