The cartridge will initially be offered in three bullet types: 20-grain plastic tip in the Varmint HV (High Velocity) line, 25-grain plastic tip in the Varmint HE (High Energy) line and a 20-grain jacketed hollow point in the legendary Super-X line.
Winchester has said that each .17 Win. Super Mag. bullet will surpass the long-range wind drift and bullet drop limitations of popular rimfire calibers like .22 Win. Mag. and .17 HMR, while also depositing more than 150 percent more energy than either round.
Each of the brand-new .17 Win. Super Mag. symbols will be offered in a 50-round box and 500-round case. The ammunition will be available at Winchester dealers by April 2013.
.17 Win. Super Mag. Specifications:

For more information, check out the embedded video below or go to Winchester.com.