20rds - 300 WSM Winchester Supreme Elite 150gr XP3 Ammo

Winchester Ammunition 150 Grain Polymer Tipped Ammo Details

150 Grain - 300 WSM Winchester Supreme Elite XP3 Ammo



Winchester is one of the most widely recognized and respected names in ammunition. For shooters around the world, the legendary “Winchester” name is synonymous with quality and reliability. Founded in 1866, Winchester continues to introduce innovative products for the modern sportsman.



This package contains 20 rounds of Winchester Supreme Elite .300 Win Short Mag ammunition. Each cartridge is loaded with a 150 grain polymer-tipped XP3 projectile. Featuring a two-stage expansion design, Winchester’s XP3 bullet delivers pinpoint accuracy, effective knockdown power, and deep penetration. This near-perfect hunting bullet is effective on tough game, like elk, moose, bear, and African game, although it is also effective on medium game, including antelope and whitetails.



This ammunition is factory fresh, non-corrosive, boxer primed, and features nickel-plated brass cases for smooth feeding, function, and extraction. Each round produces a consistent muzzle velocity of 3300 feet per second and a muzzle energy of 3625 foot pounds. Tough on game, but easy on your weapon, these Winchester Supreme Elite rounds feature a special Lubalox coating to reduce barrel fouling.


  • Manufacturer
  • Bullet Weight
    150 Grain
  • Bullet Type
    Polymer Tipped
  • Casing Type
    Nickel-Plated Brass
  • Primer Type
  • Manufacturer SKU
    SXP300SA

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The Reviews

Why Shooters and Hunters love or hate 20rds - 300 WSM Winchester Supreme Elite 150gr XP3 Ammo

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  • ☆☆☆☆☆

    posted on by Schirmer David

    It shots great in my 300 WSM but I can’t get it what is the problem? I’ve kept my cases to reload but I can’t find the bullet you use with the red polymer tip. If I can’t buy them give the components you use and powder amount of powder you use so I can get back my consistency

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