Winchester Ammo WSC380AU Unprimed Cases380 ACP Handgun Brass 100 Per Bag

Winchester Unprimed .380 ACP handgun brass cases give reloaders the foundation they need to build consistent, reliable ammunition for range work, practice, or personal defense loads. These 380 ACP brass cases arrive 100 per bag and skip the primer pocket—you'll seat your own primers during the reloading process. That control over primer selection is one reason handloaders prefer starting with unprimed brass, especially when working up loads for defensive or competition shooting where consistency matters.

Winchester manufactures these cases through a controlled annealing process that carefully balances hardness and flexibility. The annealing gives the brass the right temper to hold bullets securely during firing while maintaining enough give to handle the firing cycle without cracking. You may notice light staining near the neck—that's a natural result of the annealing process and doesn't affect function. Because of manufacturing and shipping conditions, case mouths can arrive slightly imperfect, which is normal; you'll resize, chamfer, and deburr them as part of your standard reloading prep anyway.

If your reloading setup includes an expander ball, you can run it through the neck in line with your sizing die to open the case mouth before seating. Whether you're loading for a compact carry gun, range pistol, or just building your ammo inventory, Winchester brass has the reputation and quality control that keeps reloaders coming back.

Key Features

• Unprimed cases—you seat your own primers for full reloading control
• Annealed brass for balanced hardness and flexibility through the firing cycle
• 100 cases per bag for convenient batch reloading
• .380 ACP handgun cartridge—fits compact and full-size pistols
• Light staining from annealing is normal and does not affect performance

Specifications

Frequently Asked Questions

What is unprimed brass, and why would I want it instead of primed cases?

Unprimed brass comes without a primer seated in the pocket. This gives you control over which primers you use—important when you're fine-tuning loads or prefer a specific primer for reliability or consistency. You'll need a primer seating tool as part of your reloading setup.

Will the light staining on the cases affect my reloads?

No. The light stain near the neck is a natural result of the Winchester annealing process and does not impact function or safety. It's cosmetic only.

Do I need to prep these cases before reloading?

Yes. As with all fired or new brass, you should resize, chamfer, and deburr the case mouths. Some reloaders also run an expander ball through the neck in line with their sizing die to open the mouth before bullet seating.

What guns do these cases fit?

.380 ACP brass works in any firearm chambered for .380 ACP, including compact semi-automatic pistols and some full-size models.