There are two main products described as Winchester Super-X Magnum Rimfire Ammunition. As part of the Super-X line they are able to offer proven dependability and accuracy via high quality and sure functioning leaving you with a high-performance bullet.
Both of the .22 Winchester Magnum ammunition choices are 40 grain and ideal for small game and varmints. The difference is the option of a full metal jacket or a JHP style. The full metal jacket for example has 324 foot-pounds of muzzle energy for 1910 feet per second muzzle velocity.
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