Hodgdon Retumbo RET1 Extreme Magnum Rifle Powder, 1 lb

Hodgdon Retumbo RET1 is a true magnum rifle powder engineered for large-capacity rifle cartridges with relatively small bores. This extruded propellant is designed for demanding applications such as the .300 Remington Ultra Magnum, .30-378 Weatherby Magnum, 7mm Remington Ultra Magnum, 7mm STW, and other overbore cartridges. Its formulation provides reloaders with a specialized option for developing consistent magnum rifle loads using appropriate bullets, primers, and carefully verified load data.

Retumbo is part of Hodgdon’s Extreme family of powders, which is formulated to help reduce sensitivity to changes in temperature. This characteristic can support more consistent performance when ammunition is used across varying hot and cold conditions, although actual results depend on cartridge configuration, components, firearm, and loading practices. Shooters may experience velocity gains compared with other magnum powders, but performance varies by load and should always be evaluated against current published data.

This Hodgdon rifle powder is supplied in a 1-pound container for handloaders seeking a purpose-built propellant for high-capacity magnum cartridges. Always follow Hodgdon’s current reloading data and established handloading safety procedures. Begin with the recommended starting load, use a reliable scale, inspect each cartridge carefully, and never exceed published maximum charges. Retumbo RET1 is intended for experienced reloaders who need a magnum powder suited to cartridges requiring a slower-burning propellant and dependable performance across changing environmental conditions.

Features:

• True magnum rifle powder formulated for large-capacity cartridges and relatively small bores

• Suitable for cartridges including .300 Remington Ultra Magnum, .30-378 Weatherby Magnum, 7mm Remington Ultra Magnum, and 7mm STW

• Extruded propellant designed for high-performance magnum rifle applications

• Hodgdon Extreme formulation helps reduce sensitivity to hot and cold temperature changes

• Supplied in a 1-pound container for handloading applications