The Hodgdon Retumbo Rifle Powder delivers consistent performance for magnum rifle cartridges requiring slow-burning propellant characteristics. This temperature-stable powder maintains velocity consistency across extreme weather conditions, making it a preferred choice for long-range precision shooting and magnum hunting applications.
What Makes This Different
Retumbo features an extruded grain structure that provides exceptional metering consistency through powder measures compared to ball powders. The temperature stability reduces velocity variations by up to 40% compared to standard powders across temperature swings from -40°F to 140°F. This spherical powder burns progressively, maximizing case capacity utilization in large magnum cartridges while maintaining safe pressure curves.
Key Features
- Temperature-stable formulation maintains consistent velocities across extreme conditions
- Extruded grain structure ensures precise metering and charge consistency
- Optimized burn rate for .300 Winchester Magnum, 7mm Remington Magnum, and similar cartridges
- 8-pound container provides approximately 1,000 rounds of .300 Win Mag loads
- Low copper fouling characteristics extend barrel cleaning intervals
- Compatible with standard and magnum rifle primers
- Manufactured to strict lot-to-lot consistency standards
Retumbo excels in applications requiring maximum velocity from magnum cartridges while maintaining accuracy standards. Competitive shooters rely on its consistent burn characteristics for F-Class and long-range precision matches. Hunters appreciate the retained velocity at extended ranges, particularly for elk and large game hunting scenarios. The powder performs reliably in both controlled indoor ranges and field conditions with significant temperature variations.
Technical Specs
- Weight: 8 pounds (3.63 kg) net powder weight
- Grain type: Extruded stick powder
- Burn rate: Slow (similar to H1000 classification)
- Recommended cartridges: .300 Win Mag, 7mm Rem Mag, .338 Lapua, .300 RUM
- Container: Steel canister with tamper-evident lid
- Storage temperature range: -40°F to 140°F
- Country of origin: United States
- Lot number tracking for consistency verification
This 8-pound container represents significant value for high-volume reloaders and competitive shooters who demand consistent performance. The larger format reduces per-round costs while ensuring powder lots remain consistent across extended loading sessions.