imr enduron 7977 powder bottle

IMR ENDURON 7977

IMR
SKU:
979771
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Description

IMR Enduron 7977 is a slow-burning magnum rifle powder engineered for high-performance long-range and heavy-caliber applications. As part of the advanced Enduron powder family, 7977 delivers excellent loading density, temperature stability, and reduced copper fouling for precision shooters and hunters demanding consistent results.

Optimized for magnum cartridges, IMR 7977 provides near-full case fill at maximum charges, promoting uniform ignition and highly consistent ballistic performance. Its slow burn rate makes it exceptionally well suited for cartridges such as .300 Winchester Magnum, 7mm Remington Magnum, and .338 Lapua Magnum, where accuracy and velocity are critical.

The Enduron series incorporates advanced technology including a built-in copper fouling eliminator, environmental considerations, and resistance to temperature fluctuations. These features help maintain accuracy over extended shooting sessions while reducing barrel fouling and improving shot-to-shot consistency in varying climates.

Comparable in performance range to Hodgdon H1000, IMR 7977 offers magnum shooters another premium option for precision handloading applications.

Key Features:

  • Slow-burning magnum rifle powder
  • Part of the advanced IMR Enduron series
  • Excellent loading density for magnum cartridges
  • Temperature-stable performance in varying conditions
  • Copper fouling reducer helps maintain barrel accuracy
  • Optimized for .300 Win Mag, 7mm Rem Mag, and .338 Lapua
  • Consistent ignition and uniform ballistic performance
  • Environmentally conscious formulation
  • Ideal for long-range shooting and hunting applications
  • Made in Canada

Specifications:

  • Manufacturer: IMR
  • Model: Enduron 7977
  • Type: Smokeless Powder (Rifle)
  • Powder Style: Extruded
  • Series: Enduron
  • Application: Magnum Rifle Reloading
  • Compatible Calibers: .300 Win Mag, 7mm Rem Mag, .338 Lapua, and more
  • Performance Comparable To: Hodgdon H1000
  • Origin: Canada
  • Category: Rifle Powder