Description
IMR 4227 is a versatile propellant powder with a fast burn rate, suitable for a variety of rifle and subsonic load applications. Its granular form allows for smooth metering and consistent charge weights, essential for precision shooting requirements. Known for its excellent temperature stability, IMR 4227 maintains performance across a wide range of environmental conditions, which is critical for long-range accuracy and reliable ignition in subsonic loads. Commonly paired with calibers such as .30 Carbine, .44 Magnum, and .218 Bee, IMR 4227 excels in both low-velocity rifle and high-performance pistol loads. Its fast burn rate is particularly advantageous in short-barreled firearms and those requiring efficient energy transfer without excessive recoil. For handloaders, IMR 4227 offers the advantage of reduced muzzle flash and manageable pressures, enhancing shooter comfort and safety. During load development, gradual powder increment testing is recommended to ensure optimal ballistic performance while adhering to start and maximum charge recommendations. IMR’s reputation for quality ensures that reloaders can rely on 4227 for consistent performance with each load.
Specifications
Burn Rate
6 (Medium-Fast)
Bulk Density
0.842 g/cm³
Density
1.520 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 4227
Verified load data combinations using IMR 4227.
.17 Hornet
Berger .172 | 25gr | Berger Varmint 25gr
.17 Hornet
Hornady .172 | 25gr | Hornady V-MAX 25gr
.17 Rem.
Berger .172 | 25gr | Berger Varmint 25gr
.17 Rem.
Hornady .172 | 15.5gr | Hornady NTX 15.5gr
.17 Rem.
Hornady .172 | 17gr | Hornady V-MAX 17gr
.17 Rem.
Hornady .172 | 20gr | Hornady V-MAX 20gr
.17 Rem.
Hornady .172 | 25gr | Hornady V-MAX 25gr
.17 Rem.
Impala Bullets .172 | 20gr | Impala LWHV LS 20gr
.17 Rem.
Impala Bullets .172 | 22gr | Impala LW CFN 22gr
.17 Rem.
Lehigh Defense .172 | 18gr | Lehigh Defense Controlled Chaos 18gr
.17 Rem.
Lehigh Defense .172 | 20gr | Lehigh Defense Controlled Chaos 20gr
.17 Rem.
Nosler .172 | 20gr | Nosler Varmageddon BTip 20gr
.17 Rem.
Nosler .172 | 20gr | Nosler Varmageddon 20gr
.17 Rem.
Peregrine .172 | 21gr | Peregrine VLR-4 21gr
.17 Rem.
Peregrine .172 | 22gr | Peregrine VLR-5 22gr
.17 Rem.
Styria Arms | AERO .172 | 19gr | AERO SOLR-SR,- smax:6.90 19gr
.17 Rem.
Styria Arms | AERO .172 | 19gr | AERO SB-SR,- smax:7.00 19gr
.17 Rem. Fireball
Berger .172 | 25gr | Berger Varmint 25gr
Subsonic Loads — IMR 4227
Verified subsonic load data combinations using IMR 4227.
.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 | 95gr | AERO SUB-I,- smax:11.30 95gr
.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
.300 AAC Blackout
Barnes .308 | 180gr | Barnes MRX BT 180gr
.300 AAC Blackout
Discreet Ballistics .308 | 188gr | Discreet Ballistics Selous Machined Expander 188gr
.300 AAC Blackout
Ferrobull Europe .308 | 180gr | Ferrobull Tripple Expand Jagd 180gr
Community Loads — IMR 4227
Sample load data calculated with IMR 4227.
You need a PRO license to unlock and view all data.
| Cartridge | Bullet | Barrel (in) | Charge (gr) | OAL (in) | Case Volume (GoW) | Max. Pressure (psi) | Muzzle Velocity (fps) |
|---|---|---|---|---|---|---|---|
| .172 | 20gr | Hornady V-MAX | 20.0 | 15.0 | 1.80 | 20.5 | 52,982 (96%) | 3845 | |
| .172 | 20gr | Hornady V-MAX | 20.0 | 14.0 | 1.80 | 20.5 | 43,830 (80%) | 3642 | |
| .222 | 60gr | Hornady V-MAX | 23.6 | ••.• | 2.35 | 43.5 | 101,715 (173%) | 3770 | |
| .224 | 55gr | Hornady SP | 23.6 | ••.• | 2.35 | 43.5 | 61,482 (105%) | 3484 | |
| .222 | 60gr | Hornady V-MAX | 23.6 | 28.0 | 2.35 | 43.5 | 66,094 (113%) | 3409 | |
| .308 | 125gr | Speer TNT | 16.0 | ••.• | 2.10 | 25.1 | 42,630 (84%) | 2057 | |
| .308 | 125gr | Sierra MatchKing | 16.2 | ••.• | 2.26 | 31.0 | 48,066 (84%) | 2103 | |
| .355 | 170gr | Hornady InterLock | 18.0 | ••.• | 2.26 | 36.8 | 47,311 (86%) | 2110 | |
| .355 | 170gr | Hornady InterLock | 18.0 | ••.• | 2.26 | 36.8 | 36,814 (67%) | 1959 | |
| .224 | 55gr | Speer Spitzer Soft Point | 16.0 | ••.• | 2.17 | 28.8 | 57,246 (92%) | 2910 | |
| .224 | 55gr | Speer Spitzer Soft Point | 16.0 | ••.• | 2.17 | 28.8 | 56,362 (90%) | 2897 |
Calculate Loads with IMR 4227
Use our professional ballistics calculator to develop safe and accurate load recipes.
Start Calculating