Description
IMR Enduron 7977 is a slower-burning propellant in the Enduron family, developed for magnum applications. Its loading density is designed for magnum cartridges, filling the case nicely at maximum charges and contributing to uniformity and accuracy.
This true magnum propellant delivers outstanding performance in .300 Winchester Magnum, 7mm Remington Magnum, and .338 Lapua, among other cartridges. For rifle handloaders working with these cartridges, IMR 7977 offers the case-fill characteristics associated with its magnum-focused burn rate.
Enduron-series characteristics include a copper fouling eliminator, insensitivity to temperature changes, ideal loading density, and an environmentally friendly formulation. These features distinguish IMR Enduron 7977 within the IMR propellant line.
IMR 7977 performs comparably to Hodgdon H1000, though charge weights are materially different. Made in Canada, it is available in 1-pound and 8-pound containers.
- Slow burn rate for magnum applications
- High loading density for magnum cases
- Supports uniformity and accuracy
- Temperature-change insensitivity
- Copper fouling eliminator
- Comparable performance to Hodgdon H1000
- Available in 1-pound and 8-pound containers
- Made in Canada
Product Info
- Warnings:
- WARNINGS FOR CALIFORNIA RESIDENTS
- SDS:
- SAFETY DATA SHEET
- Type:
- Rifle
- Info:
- SALES & SHIPPING
- Group:
- Smokeless Powder
- Temperature_Stable:
- Yes
- Extra_Clean_Burn:
- No
- Form:
- Extruded
- Family:
- Enduron
- Subsonic:
- No
- Base:
- Single
- Q&A:
- Is IMR Enduron 7977 suitable for magnum rifle cartridges?
- It is a slow-burning, true magnum propellant suited to cartridges such as .300 Winchester Magnum, 7mm Remington Magnum, and .338 Lapua.
- What are the main features of IMR Enduron 7977?
- Key Enduron-series features include copper fouling elimination, insensitivity to temperature changes, ideal loading density, and an environmentally friendly formulation.
- What is IMR 7977 designed to do?
- Its loading density is designed to fill magnum cases nicely at maximum charges, supporting uniformity and accuracy.
- What container sizes are available for IMR 7977?
- IMR Enduron 7977 is available in 1-pound and 8-pound containers.
Reviews
5 Reviews
-
IMR 7977
I use 98 grains in a 31" 300 RUM. I love it! Pushing 163gr SCBT 3611 fps (avg.) When will it be back in stock?
-
IMR 7977
Works great in a 7mm Remington Magnum cartridge out of a Winchester Stainless Model 70 using 136 gn Hammer (sledge hammer) bullets. Really consistently accurate results.
-
25-06
56.0 grns behind a 100gr NBT got me 0.5" at 100 with 3156 f.p.s.
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IMR 7977 enduron reloading powder
have used this powder in a .270 wsm useing the Hornady 150 grain SSTwith the exact load as HODGDON recomends and found it accurate and takeing large red deer out to 500 meters with ease.
-
338 lapua
Very fast flat shooting powder. Consistent performance . 338 lapua 250 grain BTHP.
