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Starline Brass Unprimed Cases — .45 ACP Handgun Brass — 100 Per Bag (45AEUP100 / 837306003745)

Achieve precision, reliability, and long-lasting performance with Starline Brass Unprimed Cases for .45 ACP — the gold standard in high-quality reloading components. Engineered with exceptional consistency and durability, these Starline .45 ACP brass cases are perfect for competitive shooters, law enforcement professionals, and dedicated reloaders who demand the very best in performance and longevity. Packaged in convenient 100-count bags, these new, unprimed cases are ready to become the foundation of your next perfect load.

Premium Quality for Superior Performance

Manufactured in the USA using state-of-the-art processes and strict quality controls, Starline Brass has become the top choice for reloaders seeking brass that performs flawlessly through multiple reload cycles. Each .45 ACP case is drawn from premium brass alloy, heat-treated for uniform hardness, and meticulously inspected to ensure consistent wall thickness, primer pocket depth, and overall dimensional accuracy.

The result? Brass that resizes easily, holds primers securely, and provides uniform ignition and pressure — shot after shot.

Optimized for the Legendary .45 ACP Cartridge

Originally developed by John Browning and introduced in 1905, the .45 ACP (Automatic Colt Pistol) remains one of the most iconic and effective handgun cartridges in the world. Trusted for its power, accuracy, and dependability, the .45 ACP is widely used in both semi-automatic pistols and pistol-caliber carbines.

Starline’s .45 ACP brass cases are engineered to exact SAAMI specifications, ensuring compatibility and flawless performance in all major firearm platforms, including:

• 1911 pistols and modern variants

• Glock 21, 30, and 41 models

• Smith & Wesson M&P45 series

• Springfield Armory XD45 / XDM45

• Sig Sauer P220, HK45, and other .45 ACP-chambered firearms

Whether you’re building target loads, defensive rounds, or competition ammunition, Starline brass offers the reliability and uniformity needed for superior ballistic performance.

Technical Specifications

• Brand: Starline Brass

• Caliber: .45 ACP (Automatic Colt Pistol)

• Model / SKU: 45AEUP100

• UPC: 837306003745

• Quantity: 100 cases per bag

• Condition: New, Unprimed

• Material: Premium reloadable brass alloy

• Finish: Polished brass

• Origin: Made in the USA

Engineered for Consistency and Longevity

Every Starline .45 ACP case undergoes a specialized annealing process to balance hardness and ductility, ensuring that the necks and case mouths maintain their integrity through multiple reloading cycles. Primer pockets are uniform and tight for consistent primer seating, while flash holes are precision-drilled and deburred to ensure reliable ignition.

The result is brass that:

• Resizes smoothly with minimal friction.

• Provides tight, uniform crimps for secure bullet seating.

• Delivers consistent internal volume for accurate pressure and velocity control.

• Outlasts other brands, giving reloaders better long-term value.

Perfect for a Wide Range of Applications

From casual plinking to competitive shooting, the .45 ACP remains a top performer. Starline’s brass supports a wide range of load types and bullet weights, including:

• Target and training rounds with lighter bullets for soft recoil.

• Defensive loads for personal protection.

• Competition loads for IPSC, USPSA, and IDPA shooters.

• Subsonic loads for use with suppressors.

This versatility makes Starline brass the go-to choice for reloaders who want to fine-tune their performance with precision.

Reloading and Safety Tips

Reloading ammunition requires care, precision, and adherence to published load data. For best results:

• Inspect each case before and after every reload.

• Follow reloading manuals from trusted sources such as Hornady, Lyman, or Speer.

• Do not exceed recommended pressures.

• Use the correct primers and powders for your specific load goals.

• Keep your brass clean, dry, and properly stored to prevent corrosion.

(Note: This product contains unprimed brass cases only. Primers, bullets, and powder are not included. Always follow safe reloading practices.)

Why Choose Starline Brass

For over 40 years, Starline Brass has set the benchmark for excellence in ammunition component manufacturing. Their commitment to quality, consistency, and innovation has made them the preferred choice of reloaders worldwide. Every case is 100% American-made, rigorously inspected, and built to deliver outstanding performance across countless reloads.

When accuracy, dependability, and craftsmanship matter most, choose Starline .45 ACP Unprimed Brass — the foundation for precision shooting.

Reload with confidence. Reload with Starline.

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