Description
IMR 4451 Enduron propellant is a medium burn rate powder designed specifically for rifle applications. It is part of the innovative Enduron series, featuring an extruded, short-grain physical form that facilitates smooth and consistent metering in loading equipment. The powder is noted for its impressive temperature stability, maintaining consistent performance across a wide range of environmental conditions, which is highly advantageous for handloaders seeking reliable shot-to-shot consistency. IMR 4451 is particularly suitable for popular calibers such as 30-06 Springfield, 270 Winchester, and 300 Winchester Magnum, providing excellent velocity and accuracy potential. When developing loads, reloaders will appreciate this powder's ability to mitigate copper fouling due to its modern, environmentally friendly formulation, thus prolonging barrel life. The medium burn rate of IMR 4451 delivers versatile performance, making it a valuable component for both medium and large game hunting applications, solidifying its reputation for quality and performance within the reloading community.
Specifications
Burn Rate
2.4 (Medium-Slow)
Bulk Density
0.909 g/cm³
Density
1.610 g/cm³
Temperature Sensitivity
Low
Suitable Substitutes
Powders with a similar burn rate that may be suitable alternatives (also see burn rate chart):
Standard Loads — IMR 4451 Enduron
Verified load data combinations using IMR 4451 Enduron.
.22 ARC (bolt action)
Sierra .224 | 90gr | Sierra HPBT MatchKinging 90gr
.22 Creedmoor
A-Square .224 | 72gr | A-Square e 72gr
.22 Creedmoor
Barnes .224 | 55gr | Barnes MPG FB 55gr
.22 Creedmoor
Barnes .224 | 55gr | Barnes RRLP 55gr
.22 Creedmoor
Barnes .224 | 55gr | Barnes TSX BT 55gr
.22 Creedmoor
Barnes .224 | 62gr | Barnes TTSX BT 62gr
.22 Creedmoor
Barnes .224 | 62gr | Barnes TSX BT 62gr
.22 Creedmoor
Barnes .224 | 62gr | Barnes TAC-X 62gr
.22 Creedmoor
Barnes .224 | 65gr | Barnes LRX BT 65gr
.22 Creedmoor
Barnes .224 | 69gr | Barnes Match Burner BT 69gr
.22 Creedmoor
Barnes .224 | 70gr | Barnes TAC-X 70gr
.22 Creedmoor
Barnes .224 | 70gr | Barnes TSX BT 70gr
.22 Creedmoor
Barnes .224 | 77gr | Barnes Match Burner BT 77gr
.22 Creedmoor
Barnes .224 | 77gr | Barnes LRX BT 77gr
.22 Creedmoor
Barnes .224 | 78gr | Barnes TSX BT 78gr
.22 Creedmoor
Barnes .224 | 85gr | Barnes Match Burner 85gr
.22 Creedmoor
Berger .224 | 60gr | Berger FB Varmint 60gr
.22 Creedmoor
Berger .224 | 60gr | Berger FBHP 60gr
Subsonic Loads — IMR 4451 Enduron
Verified subsonic load data combinations using IMR 4451 Enduron.
.30-06 Spring.
Berger .308 | 230gr | Berger Hybrid Target 230gr
.30-06 Spring.
Berger .308 | 230gr | Berger Hybrid OTM Tactical 230gr
.30-06 Spring.
Discreet Ballistics .308 | 188gr | Discreet Ballistics Selous Machined Expander 188gr
.30-06 Spring.
Hornady .308 | 175gr | Hornady Sub-X 175gr
.30-06 Spring.
Hornady .308 | 190gr | Hornady Sub-X 190gr
.30-06 Spring.
Lapua .308 | 200gr | Lapua Subsonic 200gr
.30-06 Spring.
Peregrine .308 | 155gr | Peregrine Subsonic 155gr
.30-06 Spring.
Reichenberg .308 | 154gr | Reichenberg HDB Subsonic 154gr
.30-06 Spring.
Reichenberg .308 | 200gr | Reichenberg Subsonic 200gr
.30-06 Spring.
Styria Arms | AERO .308 | 115gr | AERO SUB,- smax:11.40 115gr
.30-06 Spring.
Styria Arms | AERO .308 | 190gr | AERO SUB,- smax:23.90 190gr
.308 Win.
Discreet Ballistics .308 | 188gr | Discreet Ballistics Selous Machined Expander 188gr
.308 Win.
Hornady .308 | 175gr | Hornady Sub-X 175gr
.308 Win.
Hornady .308 | 190gr | Hornady Sub-X 190gr
.308 Win.
MAKER .308 | 200gr | MAKER 200 Grain .308 Expanding Subsonic Blackout Bullets 200gr
.308 Win.
MAKER .308 | 220gr | MAKER 300 blackout 220gr
.308 Win.
Peregrine .308 | 155gr | Peregrine Subsonic 155gr
.308 Win.
Reichenberg .308 | 154gr | Reichenberg HDB Subsonic 154gr
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