IMR 4831 Smokeless Rifle Powder 8lb Container - Magnum Cartridges

The IMR 4831 smokeless rifle powder delivers consistent performance for magnum rifle cartridges requiring slow-burning propellants. This 8-pound container provides serious reloaders with enough powder for extended shooting sessions while maintaining the temperature stability IMR powders are known for.

What Makes This Different

IMR 4831 features a slower burn rate than standard powders, making it specifically formulated for magnum cartridges like .300 Winchester Magnum, 7mm Remington Magnum, and .338 Winchester Magnum. The extruded grain structure ensures consistent metering through powder measures, while the deterrent coating provides uniform burn characteristics across temperature ranges. This powder maintains velocity consistency better than many competitors in extreme weather conditions.

Key Features

• Slow burn rate optimized for magnum rifle cartridges
• 8-pound container reduces cost per load for high-volume reloaders
• Extruded grain structure meters consistently through most powder measures
• Temperature-stable formulation maintains performance from -40°F to 140°F
• Compatible with .300 Win Mag, 7mm Rem Mag, .338 Win Mag, and similar cartridges
• Deterrent coating ensures uniform ignition and burn rate
• Produces excellent accuracy with heavy bullets in magnum cases

Field testing shows IMR 4831 excels in long-range hunting applications where consistent velocity translates to predictable bullet drop. Competition shooters appreciate the powder's ability to maintain point of impact across varying ambient temperatures. The slow burn rate maximizes case capacity utilization in magnum cartridges, often producing higher velocities than faster-burning alternatives while maintaining safe pressure levels.

Technical Specs

• Weight: 8 pounds (3.63 kg)
• Burn rate: Slow (between IMR 4350 and IMR 7828)
• Grain type: Extruded stick powder
• Recommended cartridges: .300 Win Mag, 7mm Rem Mag, .338 Win Mag, .375 H&H
• Storage: Cool, dry location away from heat sources
• Shelf life: Indefinite when stored properly
• Country of origin: Canada
• Container: Metal canister with moisture-resistant seal

Reloaders working with magnum cartridges will find IMR 4831 provides the burn characteristics needed for optimal performance with heavy bullets. The 8-pound size offers substantial savings over smaller containers while ensuring consistent lot-to-lot performance for precision applications.