Winchester USA 7.62x39mm 123 Grain Full Metal Jacket (MPN: Q3174PX)
Marksmen running AK-47 rifles, SKS carbines, and modern 7.62x39mm bolt-action rifles or AR-platform carbines often struggle to find non-magnetic, range-compliant target ammunition that feeds reliably without sacrificing quality. Winchester engineered their USA series 123-grain Full Metal Jacket (FMJ) load specifically to solve this issue. Purpose-built to provide high-volume shooters with premium USA-manufactured brass cartridges, this load delivers clean ignition, flat trajectories, and complete range compliance without indoor magnetic core prohibitions getting in the way.
Every round in Winchester's Q3174PX lineup is manufactured under strict quality control standards using high-grade components. Featuring a traditional round-nose 123-grain copper-jacketed full metal jacket projectile, this non-magnetic bullet contains no bi-metal or steel core elements, making it safe for all indoor facilities and steel target ranges. Winchester seats these projectiles into factory-fresh, heavy-walled reloadable brass cases charged with clean-burning propellants and non-corrosive boxer primers, eliminating the severe receiver corrosion and barrel pitting risks tied to old surplus military loads.
Out on the range, expect snappy, authentic 7.62x39mm performance—smooth bolt cycling, positive shell extraction, and tight group consistency across iron sights and optics. Propelling its 123-grain FMJ bullet at a muzzle velocity of approximately 2,365 FPS, this loading generates optimal gas pressure to drive piston assemblies and bolt carriers cleanly without short-stroking. The high-tensile drawn brass cases feature uniform boxer primer pockets, making this 20-round box a top choice for target scoring, tactical carbine drills, and handloader brass gathering.
Armorer Bench Notes & Technical Maintenance Guidance
Shipping Restrictions: Ammunition sales are strictly regulated. Check all state and local laws prior to ordering. Cannot ship to PO Boxes, APO/FPO addresses, or internationally. Must ship via ORM-D / Hazardous Ground transport.
### Winchester 7.62x39mm 123 Grain FMJ (USA Series) * **Manufacturer:** Winchester Ammunition * **Product Line:** Winchester USA ("White Box") * **Part / Symbol Number:** Q3174PX * **UPC:** 020892201903 * **Caliber:** 7.62x39mm * **Bullet Weight:** 123 Grain * **Bullet Style:** Full Metal Jacket (FMJ) * **Box Quantity:** 20 Rounds per Box --- ### Specifications & Features | Feature | Details | | --- | --- | | **Casing Material** | Brass (Reloadable) | | **Primer Type** | Boxer-primed, Non-corrosive | | **Muzzle Velocity** | ~2,365 fps ( standard 20" test barrel) | | **Muzzle Energy** | ~1,527 ft-lbs | | **Primary Use** | Target shooting, range training, and plinking | --- ### Overview This round is part of Winchester's popular USA series, designed for reliable performance during volume target shooting. Unlike many surplus or imported 7.62x39mm loads that utilize steel casings and berdan primers, this Winchester loading features high-quality reloadable **brass cases** and **non-corrosive boxer primers**, making it suitable for indoor ranges that restrict steel-cased or magnetic ammunition.
