IMR 4198 Smokeless Rifle Powder 1 lb - Fast Burning Propellant

The IMR 4198 smokeless rifle powder delivers consistent performance for small to medium cartridges requiring fast-burning propellants. This single-base powder excels in applications where precise metering and reliable ignition matter most.

What Makes This Different

IMR 4198 features a fast burn rate that makes it ideal for cartridges like .222 Remington, .223 Remington, and various wildcat rounds. The powder's consistent granule size ensures uniform metering through powder measures, reducing charge weight variations that can affect accuracy. Its temperature stability maintains velocity consistency across seasonal temperature changes, unlike some faster powders that show significant velocity swings.

Key Features

• Fast burn rate optimized for small to medium rifle cartridges
• Single-base nitrocellulose formulation for clean burning
• Consistent granule size for precise powder measure operation
• Temperature stable performance across wide temperature ranges
• Low flash signature reduces muzzle flash in low-light conditions
• Copper fouling reducer additive helps maintain barrel cleanliness
• 1-pound canister with moisture-resistant seal

Reloaders report excellent results with IMR 4198 in varmint cartridges where accuracy and velocity consistency are priorities. The powder meters well through both volumetric and electronic scales, making it suitable for high-volume loading sessions. Its clean-burning characteristics reduce barrel fouling compared to older powder formulations, extending time between cleanings during extended shooting sessions.

Technical Specs

• Weight: 1 pound (454 grams)
• Powder type: Single-base smokeless
• Burn rate: Fast (similar to H4198)
• Granule shape: Extruded stick
• Moisture content: Less than 0.5%
• Bulk density: Approximately 0.95 g/cc
• Storage temperature: -40°F to 160°F
• Shelf life: 10+ years when properly stored
• Country of origin: Canada

IMR 4198 provides the consistency and performance that precision reloaders demand for their most accurate loads. The powder's proven track record in competitive shooting and varmint hunting applications makes it a reliable choice for cartridges requiring fast-burning propellants.