The Winchester Varmint High Velocity 17 WSM ammunition is a rimfire cartridge loaded with a 20-grain polymer-tip projectile. This load is listed with a muzzle velocity of 3,000 feet per second and muzzle energy of 400 foot-pounds.
The 20-grain polymer-tip projectile is designed around rapid expansion, making its construction distinct from traditional full-metal-jacket rimfire ammunition. The polymer tip forms part of the projectile's aerodynamic profile while contributing to the intended expansion characteristics.
The .17 Winchester Super Magnum, or .17 WSM, is a high-velocity rimfire cartridge developed around a longer, stronger case than traditional .17 HMR ammunition. The listed 3,000 fps muzzle velocity provides the basis for the manufacturer's stated trajectory characteristics, including a flatter path and reduced wind drift compared with .17 HMR under comparable conditions.
Actual trajectory and wind performance will vary based on firearm configuration, barrel length, sight height, environmental conditions, ammunition lot, and distance. Published ballistic figures should therefore be treated as reference specifications rather than guaranteed results from every firearm.
This ammunition is packaged in a 20-round quantity. Before use, shooters should verify that their firearm is specifically chambered for .17 WSM and that the ammunition corresponds to the firearm manufacturer's specifications. The .17 WSM shouldn't be confused with .17 HMR or other similarly named rimfire cartridges.
The polymer-tip design and high listed velocity distinguish this load from many conventional rimfire cartridges. Users should consult current Winchester documentation for complete ballistic information, firearm compatibility, and recommended handling practices.
Ammunition should be stored in a cool, dry location and handled according to manufacturer instructions and all applicable federal, state, and local regulations. Cartridges should be inspected before use, and ammunition that appears damaged, corroded, improperly assembled, or otherwise unsuitable shouldn't be used.
Specifications:
Caliber: .17 Winchester Super Magnum
Bullet Weight: 20 grains
Bullet Type: Polymer Tip
Listed Muzzle Velocity: 3,000 fps
Listed Muzzle Energy: 400 ft-lbs
Package Quantity: 20 rounds
Trajectory: Flatter path and less wind drift than .17 HMR, according to the supplied specifications
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