IMR 4166 Enduron
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Powder Specifications:
Propellant / Powder: | IMR 4166 Enduron |
Relative Burn Rate: | 2.4 (0 ... slow| 10 ... fast) |
Weapon Use: | Rifles |
Density: | 98.64lbs/ft3 | 1580kg/m3 |
Bulk Density: | 55.00lbs/ft3 | 881kg/m3 |
PID: | PID_129 |
Last updated: | 2/18/2025 |
IMR Enduron 4166 is a versatile, match-grade propellant, with the fastest burn rate in the Enduron line. It is an extruded powder with a perfect burn speed for cartridges like 308 Winchester, 7.62mm NATO, 22-250 Remington or 257 Roberts, among other cartridges. The main features of the Enduron series are copper fouling eliminator, insensitivity to temperature changes, ideal loading density and being environmentally friendly. This propellant performs comparably to Hodgdon Varget but charge weights are materially different.
Find all IMR load data in the powder manufacturer section.
Suitable and popular calibers for IMR 4166 Enduron
The following table indicates for which caliber and bullet weight range (in grains) this powder is suitable (👍) and popular among our reloading community (👍👍). This might evolve over time as more community members share their loads and as we accumulate more calculations and tests with our balistics calculator.
Bullet Weight (gr) -> | 0-50 | 50-75 | 75-100 | 100-150 | 150-200 | 200-300 | >300 |
|---|---|---|---|---|---|---|---|
