IMR 8208 XBR Smokeless Rifle Powder 1 lb - Extreme Burn Rate

The IMR 8208 XBR delivers consistent velocities and exceptional accuracy for precision rifle cartridges in demanding conditions. This extreme burn rate powder maintains performance stability across temperature variations that cause other propellants to fail. Competitive shooters and precision reloaders rely on 8208 XBR for its metering consistency and clean-burning characteristics.

What Makes This Different

IMR 8208 XBR features an extreme burn rate formula specifically engineered for small-capacity rifle cases and reduced loads. The powder's temperature-stable chemistry prevents velocity shifts that plague standard propellants in hot and cold conditions. Laboratory testing shows velocity variations under 15 fps across temperature ranges from 0°F to 125°F, significantly tighter than conventional powders.

Key Features

• Extreme burn rate optimized for .223 Remington, .308 Winchester, and similar cartridges
• Temperature-stable formula maintains consistent velocities in extreme conditions
• Superior metering properties flow smoothly through powder measures
• Clean-burning composition reduces fouling and extends barrel life
• Copper crusher tested for lot-to-lot consistency
• Single-base nitrocellulose formulation for predictable pressure curves
• One-pound canister provides approximately 140-200 loads depending on cartridge

Range testing demonstrates 8208 XBR's ability to produce sub-MOA groups with proper load development across multiple rifle platforms. The powder performs exceptionally well in precision bolt-action rifles and semi-automatic platforms where consistent cycling requires uniform pressure curves. Hunters appreciate the consistent point of impact regardless of weather conditions, while competitive shooters value the reduced velocity standard deviation for long-range accuracy.

Technical Specs

• Weight: 1 pound (454 grams) in sealed canister
• Burn rate: Extreme - faster than IMR 4198, slower than IMR 4227
• Grain shape: Extruded stick powder for consistent metering
• Recommended cartridges: .223 Rem, .308 Win, 7.62x39, .300 BLK
• Storage temperature: -40°F to 160°F in original container
• Manufactured: United States under ISO 9001 standards
• Shelf life: Indefinite when stored properly in cool, dry conditions

IMR 8208 XBR represents decades of propellant engineering focused on precision applications where consistency matters most. Reloaders who demand repeatable results choose this powder for its proven track record in competitive shooting and precision rifle applications.