Winchester Ammo WSC40SWU Unprimed Cases40 S&W Handgun Brass 100 Per Bag

Winchester Unprimed 40 S&W handgun brass is a reload-friendly foundation for reloaders who want consistent, reliable brass cases without breaking the budget. These unprimed cases come 100 per bag, giving you a solid platform for developing loads tailored to your specific firearm and shooting discipline—whether you're running competitive matches or practicing at the range.

Winchester brass is manufactured with annealing to achieve the right hardness balance: firm enough to grip your bullet securely, flexible enough to handle the firing cycle without cracking. You may notice a light stain near the neck on some cases—that's a normal byproduct of the annealing process and does not affect performance. Occasionally cases arrive with imperfect mouths due to manufacturing or transit; this is where your reloading press comes in. Like all unprimed handgun brass, these 40 S&W cases will need their mouths sized, chamfered, and deburred as part of your normal reloading sequence.

If you want to add an expander ball to your sizing die to open the case neck in line with your reloading die, that's an optional step many reloaders prefer. The modularity of the reloading process means you can set up your dies and workflow exactly the way you like it.

Key Features

• 100 unprimed cases per bag—economical brass for high-volume reloaders
• Annealed Winchester brass for consistent hardness and durability
• Suitable for handgun reloading on any standard single-stage or progressive press
• Receptive to sizing, chamfering, and deburring as part of standard case prep

Specifications

Frequently Asked Questions

Are these cases already primed?

No. These are unprimed cases. You'll supply your own primers during the reloading process.

What reloading equipment will I need to use these cases?

You'll need a reloading press (single-stage or progressive), sizing dies, a primer tool, powder, and projectiles. Standard case prep tools for mouth sizing, chamfering, and deburring are also recommended. An expander ball used with your sizing die is optional but commonly used by reloaders.

Is the light stain on the cases normal?

Yes. Winchester cases are annealed during manufacturing to achieve the correct hardness, and a light stain near the neck is a normal result of this process. It does not affect performance or usability.

What should I do if a case has an imperfect mouth?

Imperfect mouths can occur during manufacturing or shipping. Your normal case prep routine—sizing, chamfering, and deburring—will correct minor mouth issues as part of the reloading process.