Description
IMR 4831 is a versatile propellant powder characterized by a slower burn rate of 1.1 on the Hodgdon burn rate chart, making it well-suited for a range of rifle applications, particularly in medium to large caliber cartridges. This extruded powder offers excellent metering properties, resulting in consistent charges and reliable performance across various loading techniques. The granule size allows for smooth operation in standard powder measures, critical for achieving uniform velocities. IMR 4831 exhibits commendable temperature stability, reducing the risk of significant velocity variation due to ambient temperature fluctuations. It is commonly paired with cartridges such as .30-06 Springfield, .270 Winchester, and .300 Winchester Magnum, providing reloaders with the ability to achieve high velocities and fine accuracy. During load development, it is crucial to start at moderate charge weights and adjust incrementally, as the slower burn rate can lead to optimal results with suitable bullet weights and seating depths. The powder's consistent performance and reliable ignition make it a favored choice among experienced handloaders seeking precision and performance in their ammunition.
Specifications
Burn Rate
1.8 (Slow)
Bulk Density
0.914 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 4831
Verified load data combinations using IMR 4831.
.20 BR
Berger .204 | 55gr | Berger Varmint 55gr
.22 ARC
Sierra .224 | 90gr | Sierra HPBT MatchKinging 90gr
.22 BR Rem.
Berger .224 | 82gr | Berger LTB 82gr
.22 Creedmoor
A-Square .224 | 72gr | A-Square e 72gr
.22 Creedmoor
Armscor .224 | 62gr | Armscor FMJ BT 62gr
.22 Creedmoor
Barnes .224 | 50gr | Barnes X S 50gr
.22 Creedmoor
Barnes .224 | 50gr | Barnes XLC S 50gr
.22 Creedmoor
Barnes .224 | 50gr | Barnes TSX BT 50gr
.22 Creedmoor
Barnes .224 | 52gr | Barnes Match Burner BT 52gr
.22 Creedmoor
Barnes .224 | 53gr | Barnes TSX BT 53gr
.22 Creedmoor
Barnes .224 | 53gr | Barnes XLC S 53gr
.22 Creedmoor
Barnes .224 | 53gr | Barnes TAC-X 53gr
.22 Creedmoor
Barnes .224 | 53gr | Barnes X S 53gr
.22 Creedmoor
Barnes .224 | 55gr | Barnes RRLP 55gr
.22 Creedmoor
Barnes .224 | 55gr | Barnes TSX BT 55gr
.22 Creedmoor
Barnes .224 | 55gr | Barnes TTSX BT 55gr
.22 Creedmoor
Barnes .224 | 55gr | Barnes MPG FB 55gr
.22 Creedmoor
Barnes .224 | 62gr | Barnes TAC-X 62gr
Subsonic Loads — IMR 4831
Verified subsonic load data combinations using IMR 4831.
.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.
MAKER .308 | 200gr | MAKER 200 Grain .308 Expanding Subsonic Blackout Bullets 200gr
.30-06 Spring.
MAKER .308 | 220gr | MAKER 300 blackout 220gr
.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.
Sierra .308 | 220gr | Sierra MatchKing 220gr
.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.
Lapua .308 | 200gr | Lapua Subsonic 200gr
.308 Win.
MAKER .308 | 200gr | MAKER 200 Grain .308 Expanding Subsonic Blackout Bullets 200gr
Community Loads — IMR 4831
Sample load data calculated with IMR 4831.
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| Cartridge | Bullet | Barrel (in) | Charge (gr) | OAL (in) | Case Volume (GoW) | Max. Pressure (psi) | Muzzle Velocity (fps) |
|---|---|---|---|---|---|---|---|
| .243 | 80gr | Remington PSP | 20.1 | 45.0 | 2.71 | 54.0 | 54,404 (90%) | 3041 | |
| .243 | 100gr | Speer Boat Tail Soft Point | 20.0 | 43.5 | 2.65 | 54.2 | 59,930 (100%) | 2864 | |
| .243 | 100gr | Speer Boat Tail Soft Point | 20.0 | 43.6 | 2.65 | 54.2 | 57,798 (96%) | 2835 | |
| .257 | 135gr | Berger Long Range Hybrid Target | 26.6 | ••.• | 2.89 | 51.5 | 61,308 (99%) | 2828 | |
| .277 | 140gr | Nosler AccuBond | 24.0 | ••.• | 3.34 | 67.0 | 59,901 (96%) | 2953 | |
| .277 | 140gr | Nosler AccuBond | 24.0 | ••.• | 3.34 | 67.0 | 56,492 (91%) | 2907 | |
| .277 | 140gr | Nosler AccuBond | 24.0 | ••.• | 3.34 | 67.0 | 54,810 (88%) | 2881 | |
| .308 | 168gr | Speer MHP BTHP M | 22.0 | ••.• | 3.34 | 68.2 | 50,952 (87%) | 2703 | |
| .308 | 168gr | Speer MHP BTHP M | 22.0 | ••.• | 3.34 | 68.2 | 48,051 (82%) | 2657 | |
| .308 | 175gr | Barnes LRX BT | 26.0 | ••.• | 3.56 | 98.9 | 63,121 (99%) | 3061 | |
| .308 | 175gr | Barnes LRX BT | 26.0 | ••.• | 3.60 | 98.9 | 54,723 (86%) | 2979 | |
| .308 | 180gr | Sierra SBT GameKing | 26.0 | ••.• | 3.44 | 89.2 | 61,003 (98%) | 2999 | |
| .243 | 108gr | Hornady ELD-Match | 20.0 | ••.• | 2.26 | 34.5 | 37,130 (60%) | 2293 | |
| .243 | 109gr | Berger Long Range Hybrid Target | 24.0 | ••.• | 2.48 | 46.0 | 55,056 (89%) | 2825 | |
| .243 | 109gr | Berger Long Range Hybrid Target | 24.0 | ••.• | 2.48 | 46.0 | 54,012 (87%) | 2812 | |
| .243 | 109gr | Berger Long Range Hybrid Target | 24.0 | ••.• | 2.48 | 46.0 | 53,098 (86%) | 2799 | |
| .264 | 140gr Hornady ECX | 23.0 | ••.• | 3.15 | 57.0 | 32,721 (59%) | 2300 | |
| .284 | 165gr | Sierra Tipped GameKing | 20.0 | ••.• | 3.29 | 82.0 | 55,027 (88%) | 2667 |
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