Winchester Ammo WSC375WU Unprimed Cases375 Win Rifle Brass 50 Per Bag

Reloading .375 Winchester isn't routine work—it demands quality brass that holds up to consistent pressures and multiple firings. Winchester Ammo WSC375WU unprimed cases give you the foundation for hand-loaded ammo built to your exact specifications. These are factory-manufactured rifle brass cases, delivered unprimed, so you control every step from primer seating onward. Whether you're tuning loads for a big-game rifle or developing match rounds, starting with Winchester brass means you're beginning with consistent case weight, neck dimensions, and wall thickness that serious reloaders expect.

The .375 Winchester is a venerable cartridge with devoted users—hunters in thick cover and shooters who appreciate its magnum stopping power in a lever-action platform. Reloading for it lets you dial in velocity and bullet weight for your specific rifle and game. These unprimed cases come 50 per bag, a practical quantity for developing loads without committing to bulk quantities before you've dialed in your recipe.

Winchester cases are manufactured to tight tolerances and have earned respect in reloading circles for consistency lot to lot. Since you're supplying your own primers and powder, you maintain full control over the final product—a key advantage for shooters who want predictable, repeatable performance.

Key Features

• Factory Winchester .375 Winchester rifle brass
• Unprimed—you select and install your own primers
• 50 cases per bag
• Suitable for hand-loading hunting and target ammunition

Specifications

Frequently Asked Questions

Can I use these cases for .375 H&H Magnum?

No. These are specifically .375 Winchester cases, which is a different cartridge from .375 H&H Magnum. Use only in rifles chambered for .375 Winchester.

What does "unprimed" mean?

Unprimed means these cases come without primers installed. You'll need to select appropriate primers separately and seat them yourself as part of your reloading process.

How many reloads can I get from these cases?

The number of reloads depends on how you load them, your rifle's chamber, and your maintenance practices. Winchester brass is known for durability, but we don't have specific reload-life data to quote. Inspect cases before each reload for signs of wear or damage.

What primer size do I need?

We don't have primer specification data included here. Consult your reloading manual for the correct primer type and size for your specific .375 Winchester load.