Winchester WLR Large Rifle Primers #8-1/2 - 1000 Count Box

Winchester WLR Large Rifle Primers deliver consistent ignition performance for centerfire rifle cartridges across temperature extremes and powder types. These #8-1/2 primers feature Winchester's proven cup design and sensitive compound formulation for reliable ignition in bolt-action rifles, semi-automatics, and precision shooting applications.

What Makes This Different

Winchester's Large Rifle primers utilize a harder cup construction compared to small rifle variants, generating the higher pressure needed for magnum powders and large case volumes. The #8-1/2 designation indicates standard sensitivity levels optimized for most rifle cartridges from .223 Remington to .30-06 Springfield. Quality control testing ensures consistent flame spread and pressure curves across temperature ranges from -40°F to 140°F.

Key Features

• 1000-count bulk packaging reduces per-round cost for high-volume reloaders
• Large rifle size fits .30-06, .308 Winchester, .270 Winchester, and similar cartridges
• Standard sensitivity compound works with ball, extruded, and compressed powder charges
• Brass cup construction withstands magnum pressures up to 65,000 PSI
• Consistent primer pocket depth of .128 inches for reliable seating
• Non-corrosive, non-mercuric compound prevents barrel damage
• Manufactured to SAAMI specifications for dimensional consistency

Reloaders report consistent velocities and standard deviations under 15 fps when paired with quality brass and powder. The primers ignite reliably in precision rifles, hunting applications, and competitive shooting disciplines. Temperature stability maintains performance from early-season hunting in sub-freezing conditions to summer prairie dog shoots exceeding 100°F ambient temperatures.

Technical Specs

• Primer Type: Large Rifle, Standard Sensitivity
• Model Number: #8-1/2
• Package Quantity: 1000 primers per box
• Cup Material: Brass construction
• Diameter: .210 inches (5.33mm)
• Height: .128 inches (3.25mm)
• Operating Temperature: -40°F to 140°F
• Manufacturer: Winchester Ammunition
• Country of Origin: United States

Winchester's century-plus experience in ammunition manufacturing shows in these primers' consistent performance and quality control standards. The 1000-count packaging provides serious reloaders with sufficient quantities for extended shooting sessions while maintaining the freshness and reliability Winchester primers are known for.