CCI Large Pistol Primers #300 Box of 1000

Clear Product Overview

CCI 300 Primers (Large Pistol Standard / No. 300) are industry-standard reloading components engineered to provide crisp, uniform ignition across standard-pressure handgun cartridges. Formulated with CCI’s non-corrosive, non-mercuric priming compound, these primers feature precision-drawn cups that seat smoothly into large pistol primer pockets. Trusted nationwide by target shooters, action pistol competitors, and volume handloaders, CCI #300 primers offer dependable sensitivity, smooth progressive press feeding, and clean combustion.

Relevant Specifications

• Brand: CCI Ammunition

• Product Line: Standard Handgun Primers Series

• Primer Type: Large Pistol Standard (No. 300)

• Quantity: Box of 1,000 (10 individual sleeve trays of 100)

• Chemical Composition: Non-Corrosive, Non-Mercuric Standard Output Priming Mix

• Cup Design: Precision-Formed Hardened Brass Cup

• Intended Applications: .45 ACP, .44 Special, .45 Colt (standard loads), 10mm Auto (standard loads), .38-40 Winchester, .44-40 Winchester

• Country of Origin: Made in the USA

Real-World Use Information

Whether running high-volume .45 ACP loads through automated progressive equipment or precision-loading .44 Special target rounds for revolver shooting, CCI 300 Primers provide consistent performance. Their smooth cup geometry prevents binding in progressive press primer shuttles and feed tubes (Dillon, Hornady, Lee, RCBS). The uniform thermal initiation ensures complete combustion of popular handgun powders like Alliant Bullseye, Unique, Hodgdon HP-38, and Winchester 231, keeping breech faces and firing pin channels free from heavy fouling.

Compatibility & Requirements

• Cartridge Compatibility: Fits all standard large pistol primer pocket brass (.45 ACP, .44 Special, .45 Colt standard, 10mm Auto).

• Equipment Compatibility: Seats cleanly using standard hand priming tools, bench tools, and progressive press priming assemblies (Dillon, Hornady, Lee, RCBS).

• Safety Requirement: Always wear protective eyewear during handling, store primers in a cool, dry place away from heat sources, and never force a primer into an obstructed pocket.

Pros & Limitations

Pros:

• Consistent Ignition: Delivers clean, rapid flame propagation for standard velocity handgun charges.

• Smooth Progressive Feeding: Uniform cup dimensions prevent jams or tipping in automated primer tubes.

• Clean-Burning Formula: Leaves minimal carbon buildup on breech faces and firing pin channels.

• Non-Corrosive Chemistry: Protects firearm barrels, action parts, and cylinder bores from rust and chemical pitting.

Limitations:

• Standard Pressure Profile: Designed for standard-pressure loads; for heavy magnum handguns using dense spherical powders (e.g., .44 Magnum with H110/W296), use CCI #350 Large Pistol Magnum primers instead.

• Large Pocket Only: Cannot be used in small pistol primer pocket brass (such as small pocket .45 ACP brass).

Frequently Asked Questions (FAQs)

Q: What is the difference between CCI #300 and CCI #350 primers?

A: CCI #300 is a standard large pistol primer for standard-pressure cartridges like .45 ACP and .44 Special. CCI #350 is a large pistol magnum primer featuring a hotter flame flash designed for magnum propellants and heavy powder charges.

Q: Can I use CCI 300 primers for .45 ACP reloading?

A: Yes, CCI #300 primers are one of the most popular choices in the country for reloading standard large primer pocket .45 ACP ammunition.

Q: Are CCI 300 primers non-corrosive?

A: Yes, CCI #300 primers utilize a modern non-corrosive and non-mercuric priming formula that protects your firearm from rust and corrosion.

Shipping & Delivery Information

• HazMat Classification: Ships as Hazardous Material (UN0044, Primers, Cap Type) under DOT rules.

• Shipping Restrictions: Ships by ground inside the Continental United States only. Therefore, we cannot ship to P.O. Boxes, APO/FPO locations, or overseas.

• Adult Signature Required: An adult must sign for the package upon delivery.

• Final Sale: Due to federal safety rules for hazardous materials, all primer sales are final and non-returnable.