Winchester Super-X Turns 100

by
posted on October 31, 2021
** When you buy products through the links on our site, we may earn a commission that supports NRA's mission to protect, preserve and defend the Second Amendment. **
Winchester Super-X

Photo by Forrest MacCormack.


Since 1921, Winchester’s Super-X brand has provided hunters and sport shooters with dedicated, dependable loads for rifles and shotguns. To commemorate its centenary, Winchester is offering seven cartridge options packaged in retro-style boxes, such as the 12-ga. load shown above.

Winchester President and owner John Olin developed the concept of Super-X in the early 20th century, theorizing that progressive-burning powders could produce greater velocities and more energy without creating significant pressure spikes. While the concept is commonly used in ammunition today, the idea was revolutionary back in the 1910s and ‘20s, and Winchester’s offering of Super-X ammunition loaded with progressive-burning powder made it more powerful than ammunition loaded with conventional smokeless powders of the time.

Available options in the Winchester 100th anniversary Super-X lineup include: .22 Long Rifle, .243 Win., .270 Win., .30-30 Win., .308 Win. and two 12-ga. options. The .270 Win., .30-30 Win. and .308 Win. loads are topped with a 150-grain Power-Point bullet, while the .243 Win. is loaded with a 100-grain Power-Point bullet. The .22 Long Rifle offering will include a 40-grain Power-Point projectile. The two 12-gauge options are both 23/4" shells, one loaded with No. 6 shot and the other with 00 buckshot. winchester.com

Latest

Gotw Tristar Raptor Ii Web
Gotw Tristar Raptor Ii Web

Gun Of The Week: TriStar Arms Raptor II

For this week's range session, we’ve got a 20-ga. semi-automatic shotgun from TriStar Arms. And this latest iteration of the Raptor is sure to impress.

The Armed Citizen® Oct. 3, 2025

Read today's "The Armed Citizen" entry for real stories of law-abiding citizens, past and present, who used their firearms to save lives.

Powerhouse Pedigree: The .375 H&H Mag. & Its Descendants

The cartridge family dynasty that began with the .375 H&H Mag. is still gaining momentum well over a century later.

Beretta Donates Unreleased Shotgun To Benefit Marine Raider Foundation

Beretta supported the fifth annual NorCal Marine Raider Foundation Fundraiser by donating a one-of-a-kind, unreleased commemorative shotgun for the event’s auction.

KelTec's Big Move To Wyoming

KelTec is the largest gunmaker in the state of Florida, but when the company looked to expand its manufacturing footprint, ultimately, the decision was made to create KelTec West, an entirely new production facility located in Rock Springs, Wyo.

New For 2025: Rossi RS22 Pistol

Rossi USA downsized its RS22 platform in 2025, creating a compact, large-format pistol variant of its popular RS22 semi-automatic rifle.

Interests



Get the best of American Rifleman delivered to your inbox.