Description
The .45-70 Government has been putting meat in the freezer and knocking down steel for well over a century, and if you shoot one you already know good brass is the backbone of a consistent load. This Winchester offering gives you fresh, unprimed rifle brass that's ready to prep, prime, and load with your own recipe. It's factory new, bagged at the plant, and built for folks who'd rather build their own ammo than settle for whatever's on the shelf.
What Makes This Winchester 45-70 Brass Worth Loading
Winchester runs its reloading brass to tight tolerances, which translates to smooth feeding and positive chambering once your rounds are built. Consistent case-to-case weight and internal capacity is a big deal in a straight-wall cartridge like the .45-70, since it helps keep your velocities and pressures predictable from one round to the next. That consistency is what separates a load that groups from one that just goes bang.
Getting the Most From Your Winchester 45-70 Government Cases
This is new, unprimed brass, so plan on a little prep before your first loading. Expect to do the usual case prep steps like trimming to length and chamfering and deburring the case mouth, and keep in mind the brass is annealed at the factory, so some light staining near the neck is completely normal and nothing to worry about. Always pull your charge data from a current reloading manual or a powder maker's website before you start. One of the best things about quality .45-70 brass is longevity, and Winchester cases hold up to being reloaded several times when you treat them right.
Whether you're feeding a lever gun like a Marlin 1895, a trapdoor Springfield that likes gentler loads, or a modern single shot you can really wind up, having a reliable supply of brass on the bench lets you tune loads exactly how you want them. This is a reloading component only and is not loaded ammunition.
Key Specifications
- Manufacturer: Winchester
- Manufacturer Part Number: WSC4570GU
- UPC: 020892632202
- Caliber: .45-70 Government
- Component Type: Unprimed Rifle Brass
- Material: Brass
- Primed: No
- Condition: New
- Quantity: 50 Per Bag
- Product Type: Rifle
What’s Included
- 50 Winchester .45-70 Government unprimed rifle brass cases
Frequently Asked Questions
Is this Winchester 45-70 brass loaded ammunition?
No, this is a reloading component only. It's new, unprimed brass with no primer, powder, or bullet installed. You'll supply those yourself and build the finished round on your own press.
Does the Winchester 45-70 brass need any prep before loading?
Yes, it's smart to do standard case prep first. That typically means checking and trimming the cases to length along with chamfering and deburring the case mouths. The brass is annealed at the factory, so some light staining near the neck is normal and not a defect.
How many times can I reload these Winchester 45-70 cases?
Winchester's durable brass can be reloaded several times when it's maintained properly. Case life depends on your pressures, how often you resize, and how well you inspect for signs of wear. Keep an eye out for stretched or cracked cases and retire any that look questionable.
Where do I find load data for the .45-70 Government?
Always pull your recipes from a current reloading manual or the powder manufacturer's website. The .45-70 covers a wide range of pressures depending on the rifle, from gentle trapdoor loads to stout modern lever gun loads, so matching your data to your firearm matters.




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