WSSM Goes .25


Winchester Ammo, in partnership with Winchester Firearms and Browning, introduces .25-caliber cartridges to its Super Short Magnum Line.

.25 Winchester Super Short Magnum cartridges will be available in 2004.

The evolution continues for the Winchester Super Short Magnum line. In 2004, the .25 WSSM will be the latest "short-fat" cartridge to roll off assembly lines and onto dealer's shelves.


According to Winchester Ammunition, the high efficiency of the "short-fat" design improves the interior ballistics of the cartridge. With more propellant surface area exposed to the primer, ignition is more consistent. In addition, the beltless shellcase allows headspacing off the shoulder to provide better centering of the bullet on the chamber. The new super-short action of the rifle also maximizes accuracy potential.

Winchester's .25 WSSM Model 70


Like its predecessors (.223 WSSM and .243 WSSM), the .25 WSSM is reported to have equal exterior ballistics of longer cartridges of the same caliber. Per Winchester Ammo, the ballistics of the .25 WSSM are equal to ballistics of the .25-'06 cartridges, with 14 percent less powder and less perceived recoil--all in a shorter action rifle (See full ballistics charts below).

The .25 WSSM is designed with varmints and medium sized, thin skin game in mind.

.25 WSSM Browning A-Bolt Hunter

Additionally, Both Winchester Rifles and Shotguns and Browning are adding the .25 WSSM caliber to the Model 70 and A-Bolt Families.

Because the overall cartridge length of the new .25 WSSM is only 2.36 inches, the short action system on both rifles are a full half-inch shorter than previous WSSM models. Winchester Rifles and Shotguns .25 WSSM Model 70 will be available in Super Shadow, Ultimate Shadow, Featherweight, Coyote and Stealth models. The Browning A-Bolt .25 WSSM will be available in Hunter, Classic Hunter, Stainless, Varmint, and Medallion models.

WINCHESTER SUPREME .25 WSSM CENTERFIRE RIFLE
(85 gr.)
Cartridge Symbol Bullet Weight Bullet Type CXP Game #
25 WSSM SBST25WSS 85 gr. Ballistic Silver Tip 1
Velocity (fps) Energy (ft.-lbs.)
Muzzle 100 200 300 400 500 Muzzle 100 200 300 400 500
3470 3156 2863 2589 2331 2088 2273 1880 1548 1266 1026 823
TRAJECTORY
LONG RANGE YARDS
100 150 200 300 400 500
1.0 1.0 0 -5.2 -15.7 -32.5



WINCHESTER SUPREME .25 WSSM CENTERFIRE RIFLE
(115 gr.)
Cartridge Symbol Bullet Weight Bullet Type CXP Game #
25 WSSM SBST25WSSA 85 gr. Ballistic Silver Tip 2
Velocity (fps) Energy (ft.-lbs.)
Muzzle 100 200 300 400 500 Muzzle 100 200 300 400 500
3060 2844 2639 2442 2254 2074 2392 2066 1778 1523 1298 1099
TRAJECTORY
LONG RANGE YARDS
100 150 200 300 400 500
1.4 1.3 0 -6.4 -18.6 -37.7



WINCHESTER SUPER-X .25 WSSM CENTERFIRE RIFLE
(120 gr.)
Cartridge Symbol Bullet Weight Bullet Type CXP Game #
25 WSSM X25WSS 120 gr. Positive Expanding Point 2
Velocity (fps) Energy (ft.-lbs.)
Muzzle 100 200 300 400 500 Muzzle 100 200 300 400 500
2990 2717 2459 2216 1987 1773 2383 1967 1612 1309 1053 838
TRAJECTORY
LONG RANGE YARDS
100 150 200 300 400 500
1.6 1.5 0 -7.4 -21.8 -45.1

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