IMR Enduron 7977 Smokeless Powder is a slow-burning, single-base extruded magnum-rifle powder intended for magnum rifle cartridges listed in current IMR data. Always use current published IMR or Hodgdon load data for the exact cartridge, projectile and component combination. Never substitute smokeless powders or exceed published data.
- Product line: IMR Enduron 7977
- Container size: 1 lb
- Primary application: magnum rifle cartridges listed in current IMR data
- High loading density for magnum cases
- Official applications include .300 Winchester Magnum, 7mm Remington Magnum and .338 Lapua Magnum
- Enduron copper-fouling-reducer and temperature-stable characteristics
- Made in Canada
