Premium .40 S&W Brass – New & Once‑Fired Cases for Reloading

Reload dependable .40 S&W rounds with confidence using Diamond K Brass. We stock both new and once‑fired .40 S&W brass, hand‑sorted, tumble‑polished, and inspected to ensure consistent dimensions, reliable feeding in semi‑autos, and excellent reloadability. Ideal for duty, competition, and range shooters who want durable, high‑quality cases.

Why Choose Diamond K .40 S&W Brass

• Certified Quality: Every lot is checked for dents, splits, and primer‑pocket integrity before packaging.

• Large Pistol Primer: Cases are compatible with standard large pistol primers used in .40 S&W loads.

• Brass & Nickel Options: Choose traditional brass or nickel‑plated cases for corrosion resistance and smoother feeding.

• Tumble‑Polished & Cleaned: Once‑fired cases are cleaned of debris and polished so they arrive ready for depriming, resizing, and loading.

• Mixed or Sorted Headstamps: Available as mixed headstamp lots or headstamp‑sorted on request for specialty needs.

Benefits of Reloading .40 S&W Brass

Reloading your own .40 S&W ammo saves money and gives you control over bullet selection and charge for duty, competition, or practice. Our processed once‑fired brass offers near‑new performance at a fraction of the cost—perfect for high‑volume shooters and precision handloaders alike.

Pack Sizes & Bulk Options

We offer .40 S&W brass in practical pack sizes to fit hobbyists and commercial reloaders — commonly 100, 500, and 1,000+ counts. Large or recurring orders qualify for volume discounts; contact our sales team for custom quotes, headstamp sorting, or primed/unprimed options.

Fast Shipping & Trusted Service

Most orders ship within 24–48 hours with secure packaging and tracking. Diamond K Brass stands behind every shipment with responsive customer support and a satisfaction guarantee.

How to Order

Choose new or once‑fired .40 S&W brass and your desired quantity.

Add to cart and complete checkout — contact us for bulk pricing or special requests.

Receive tracking and begin reloading when your brass arrives.

Order Your .40 S&W Brass Today

Stock your bench with premium .40 S&W brass from Diamond K Brass — polished, inspected, and ready to reload. Browse our selection and place your order now to save on bulk pricing and enjoy fast delivery.