WATCH: Behind The Scenes At The Winchester Rimfire Ammunition Plant

by
posted on February 20, 2020
** 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. **

The folks at American Rifleman Television recently had the chance to tour the Winchester Ammunition rimfire factory in Oxford, MS. A large portion of the billions (yes billions) of rimfire rounds produced every year in the U.S. are made at Winchester's Oxford plant. Watch the video above for a behind the scenes look with American Rifleman magazine Editor-in-Chief Mark Keefe.

The Winchester plant in Oxford runs three shifts, 24 hours a day. Since rimfire shooters have an enormous appetite for .22 LR ammunition, having enough volume from a manufacturing standpoint to supply consumer demand is something that Winchester take very seriously. As such, the company is building as much quality rimfire ammunition as it can.

To build a rimfire cartridge is not your typical assembly-line process. Different components (some explosive) come from different parts of the factory to facilitate assembly in what's more accurately described as a batch process.

One major challenge in rimfire cartridge manufacture: building the cartridge rim to the right dimensions so the proper amount of priming mix can be added for consistent ignition.

Going beyond .22 LR, Winchester has been a key player in the rimfire game for decades with innovations like the first magnum rimfire, the .22 Win. Mag., and the improved .17 Win. Super Mag.—the fastest rimfire load available.

With companies like Winchester working hard to produce rimfire ammunition in the amounts needed to satisfy shooter needs, it looks like we are safe from any shortages in the near future. 


See more: Rimfire Ammunition Reliability

Latest

1 Realavid Feb2026 Master Kits
1 Realavid Feb2026 Master Kits

Real Avid Bundles Optic Mounting and Firearm Upkeep into Two New Master Collections

Real Avid introduces two Master Collections that package optic mounting tools with firearm cleaning and maintenance equipment for DIY users and professionals.

Beretta’s B22 Jaguar Metal Competition Brings Racegun Polish to Rimfire Steel

Beretta’s B22 Jaguar Metal Competition is a purpose-built rimfire racegun that shoots flat, runs clean and arrives competition-ready straight from the box.

MTM Case-Gard Builds a Dedicated Home for the Garmin Xero Chronograph

MTM Case-Gard introduces a purpose-built hard case for the Garmin Xero chronograph, offering custom foam protection, a clear lid and a compact footprint.

New: CCI Blazer Brass Clean-Fire Suppressor Ammo

CCI’s new Blazer Brass Clean-Fire Suppressor subsonic ammo uses lead-free components to reduce fouling in suppressed pistols and carbines.

What’s In Your Range Bag, Natalia Siek?

NCAA Division I rifle athlete Natalia Siek shares her journey from first perfect 10 to international competition, plus the gear and mindset driving her success.

Six New Competition-Ready Optics for the 2026 Season

Six new optics from SHOT Show 2026 designed for competitive shooters, featuring quality glass, improved reticles and versatile mounting options across platforms.



Get the best of Shooting Sports USA delivered to your inbox.