SKU: WBWSC356U
UPC: 020892632608
MPN: WSC356U
This is Winchester unprimed .356 Winchester brass in a 50-count box, sized for handloaders feeding the .356 Winchester chambering. The .356 is a rimmed, lever-action cartridge built around the .358 bullet, and factory loaded ammunition for it has grown scarce, which makes a steady source of fresh component brass worth keeping on the bench. These cases ship unprimed and ready for full case prep, so you control primer selection, powder charge, and bullet seating from the first step. For anyone running a Winchester Model 94 Big Bore or similar lever gun, having dedicated 356 Winchester brass on hand keeps the rifle fed.
Winchester shellcases are engineered to precise tolerances for smooth feeding and positive chambering, per manufacturer specifications. That matters more with the .356 than most rounds, since it headspaces on the rim and runs through tubular magazines and lever actions where reliable feeding is not optional. The brass carries a Boxer primer pocket and a large rifle flash hole, so standard reloading dies and decapping pins apply. The MPN on this box is WSC356U, identifying it as the unprimed .356 Winchester case in Winchester's rifle component line. Because the cases arrive unprimed, plan on a normal prep cycle: inspect, resize, trim to length, chamfer and deburr the case mouth, then prime and charge. Starting with consistent factory brass cuts down on case-to-case variation in your finished loads.
A reloader building hunting or range ammunition for a .356 lever gun is the buyer here, especially since loaded .356 ammo is hard to find on shelves. Fresh brass also lets you tune charges for the heavier .358-diameter bullets the cartridge is known for. If you load across a family of Winchester lever cartridges, we stock related options like 307 Winchester brass and 358 Winchester brass. Browse the full rifle brass selection to round out your component supply for the season.
These cases ship unprimed. You add the primer of your choice during the reloading process. The .356 Winchester uses a large rifle primer, so plan your component purchases accordingly when prepping a batch of these 50 cases.
Each box contains 50 unprimed .356 Winchester cartridge cases, MPN WSC356U. The 50-count packaging is a practical batch size for prepping and loading at the bench in a single session.
The .356 Winchester was chambered in lever-action rifles such as the Winchester Model 94 Big Bore and the Marlin 336ER. It is a rimmed cartridge that headspaces on the rim and feeds through tubular magazines, so smooth, in-spec brass helps reliability.
You need .356 Winchester reloading dies, which are caliber specific. The case uses a Boxer primer pocket and large rifle flash hole, so standard decapping pins and priming tools work. Trim cases to length and chamfer the mouth before loading.
Factory loaded .356 Winchester ammunition is increasingly hard to find. Buying fresh component brass lets you keep a lever gun fed, tune loads for heavier .358 bullets, and reuse the cases across multiple firings with proper care.
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Winchester Bulk Components
Winchester Bulk Components
Winchester Bulk Components
Winchester Bulk Components
Winchester Bulk Components