Description
IMR 4955 Enduron is a versatile rifle powder with a medium-slow burn rate, positioned slightly slower than IMR 4350, making it ideal for a wide range of popular rifle calibers. This refined propellant excels in providing uniform ignition and optimal pressure curves, particularly suited for larger cartridges typical in precision shooting and hunting applications. The 4955 Enduron features a short-cut extruded form, promoting consistent metering through powder measures, which benefits accuracy and repeatability in handloading processes. One of the key attributes of 4955 Enduron is its exceptional temperature stability, engineered to deliver consistent performance across a wide range of environmental conditions. This powder is well-suited to calibers such as the .270 Winchester, .30-06 Springfield, and .300 Winchester Magnum, offering excellent velocity and accuracy. The Enduron technology incorporates a copper fouling eliminator, enhancing barrel life and reducing maintenance intervals. For reloaders, the advantages of 4955 Enduron include its clean burn characteristics and favorable pressure management, allowing for flexibility in load development. This powder's consistency empowers experienced handloaders to fine-tune loads for precision accuracy and optimal ballistic performance.
Specifications
Burn Rate
2 (Medium-Slow)
Bulk Density
0.915 g/cm³
Density
1.600 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 4955 Enduron
Verified load data combinations using IMR 4955 Enduron.
.22 Creedmoor
Barnes .224 | 77gr | Barnes Match Burner BT 77gr
.22 Creedmoor
Barnes .224 | 85gr | Barnes Match Burner 85gr
.22 Creedmoor
Berger .224 | 77gr | Berger LTB 77gr
.22 Creedmoor
Berger .224 | 77gr | Berger OTM Tactical 77gr
.22 Creedmoor
Berger .224 | 80gr | Berger VLD Target 80gr
.22 Creedmoor
Berger .224 | 80.5gr | Berger Fullbore Target 80.5gr
.22 Creedmoor
Berger .224 | 82gr | Berger LTB 82gr
.22 Creedmoor
Berger .224 | 85.5gr | Berger Long Range Hybrid Target 85.5gr
.22 Creedmoor
Berger .224 | 90gr | Berger VLD Target 90gr
.22 Creedmoor
Berger .224 | 90gr | Berger VLD LRBT 90gr
.22 Creedmoor
Hornady .224 | 80gr | Hornady ELD Match 80gr
.22 Creedmoor
Hornady .224 | 80gr | Hornady ELD-X 80gr
.22 Creedmoor
Hornady .224 | 88gr | Hornady ELD Match 88gr
.22 Creedmoor
Lapua .224 | 77gr | Lapua ScenarL 77gr
.22 Creedmoor
Nosler .224 | 77gr | Nosler Custom Competition 77gr
.22 Creedmoor
Nosler .224 | 80gr | Nosler Custom Competition 80gr
.22 Creedmoor
Nosler .224 | 85gr | Nosler RDF 85gr
.22 Creedmoor
Sierra .224 | 77gr | Sierra Hollow Point Boat Tail 77gr
Subsonic Loads — IMR 4955 Enduron
Verified subsonic load data combinations using IMR 4955 Enduron.
.30-06 Spring.
Berger .308 | 230gr | Berger Hybrid OTM Tactical 230gr
.30-06 Spring.
Berger .308 | 230gr | Berger Hybrid Target 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 | 190gr | AERO SUB,- smax:23.90 190gr
6.5 Creedmoor
Lehigh Defense .264 | 130gr | Lehigh Defense Controlled Chaos 130gr
6.5 Creedmoor
RWS .264 | 159gr | RWS TMR 159gr
7.5 x 55 Swiss
Berger .308 | 210gr | Berger VLD Target 210gr
7.5 x 55 Swiss
Discreet Ballistics .308 | 188gr | Discreet Ballistics Selous Machined Expander 188gr
7.5 x 55 Swiss
Hornady .308 | 175gr | Hornady Sub-X 175gr
7.5 x 55 Swiss
Hornady .308 | 190gr | Hornady Sub-X 190gr
7.5 x 55 Swiss
Lapua .308 | 200gr | Lapua Subsonic 200gr
7.5 x 55 Swiss
Nosler .308 | 190gr | Nosler AccuBond Long Range 190gr
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