.44-40 Winchester Brass (aka .44 WCF) — Starline & Once-Fired Options

Reload classic .44-40 rounds with confidence using Diamond K Brass. The .44-40 (also sold as .44 WCF or .44 Winchester) is beloved for its versatility — chambered in both rifles and handguns — and has seen a resurgence thanks to Cowboy Action Shooting and vintage firearm enthusiasts.

Premium Starline .44-40 Brass

We carry Starline .44-40 brass, manufactured with a case wall thickness of 0.0065″, offering enhanced stiffness and durability compared with many other brands. That added rigidity makes the cases easier to resize and less prone to splits, which means smoother reloading and longer case life for hobbyists and competitive shooters alike.

Key Features & Uses

• Versatile Cartridge: Popular in both lever rifles and revolvers — ideal for cowboy action, hunting, and recreational shooting.

• Superior Durability: Starline’s .0065″ wall thickness results in a stiffer, more reliable case that stands up to multiple reload cycles.

• Primer Type: Designed for large pistol primer applications.

• New & Once-Fired Options: Choose factory-new Starline brass for match-grade consistency or once-fired lots for cost savings.

Why Reloaders Choose Diamond K Brass

We hand-inspect and, where applicable, tumble-polish our brass so it arrives clean and ready for depriming, resizing, and loading. Whether you’re reviving a historic Winchester, competing in cowboy action, or forming custom hunting loads, our .44-40 offerings give you dependable components and expert service.

Order Today

Find Starline .44-40 brass and once-fired .44 WCF cases in our online store. Have questions about compatibility or bulk pricing? Contact our team — we’re happy to help you find the right brass for your firearm and load development.