CCI No. 250 Large Rifle Magnum Primers - 1000 Count Box

The CCI No. 250 Large Rifle Magnum Primers deliver consistent ignition for high-performance magnum cartridges requiring reliable primer performance. These primers feature enhanced cup thickness and hot ignition specifically engineered for magnum powder charges and temperature-sensitive applications.

What Makes This Different

CCI No. 250 primers utilize a more sensitive priming compound than standard large rifle primers, generating 24% more energy for reliable ignition of slow-burning magnum powders. The thicker brass cups withstand higher chamber pressures associated with magnum cartridges while maintaining consistent flame spread. This enhanced design ensures complete powder burn in temperature extremes where standard primers often fail.

Key Features

• Enhanced priming compound generates 24% more ignition energy than standard primers
• Thicker brass cups engineered for magnum chamber pressures up to 65,000 PSI
• Compatible with .300 Winchester Magnum, .338 Lapua, 7mm Remington Magnum, and similar cartridges
• Non-corrosive, non-mercuric formula prevents barrel damage and extends case life
• Consistent flame temperature of 3,000°F for uniform powder ignition
• Factory-sealed packaging maintains primer sensitivity for extended storage
• Precision-manufactured to .002-inch tolerance for reliable feeding

Professional reloaders and precision shooters rely on CCI No. 250 primers for consistent velocities in long-range competition loads and hunting applications. The enhanced ignition energy proves essential for achieving complete powder burn in cold weather conditions and with temperature-stable powders like H1000 and Retumbo. Match shooters report velocity standard deviations under 15 fps when paired with quality brass and consistent powder charges.

Technical Specs

• Primer Type: Large Rifle Magnum
• Cup Material: Brass with enhanced thickness
• Ignition Energy: 24% above standard large rifle primers
• Operating Temperature: -40°F to +140°F
• Packaging: 1,000 primers per sealed box
• Shelf Life: 10+ years when stored properly
• Manufacturing: Made in USA by CCI/Speer
• Compatible Cartridges: All large rifle magnum cases

CCI's reputation for primer consistency spans over 50 years of ammunition component manufacturing. The No. 250 primers undergo individual inspection and lot testing to ensure uniform performance across temperature ranges and storage conditions.