Description
IMR 4350 is a medium-slow burn rate powder that has established itself as a versatile choice for a wide range of rifle calibers. Known for its consistent performance, this powder is particularly favored in producing precise loads for larger capacity rifle cases, making it an ideal option for calibers like .30-06 Springfield, .270 Winchester, and .300 Winchester Magnum. Its extruded stick form ensures reliable ignition, though it may require careful attention during metering to achieve uniform charges, especially in progressive loading setups. With temperature stability engineered into its formulation, IMR 4350 provides consistent velocities across varied shooting conditions, ensuring performance remains unaffected by moderate temperature swings. For experienced handloaders, this powder offers the advantage of predictable pressure and velocity curves, which greatly aids in the development of tailored loads. When conducting load development, attention to published data is crucial to maximize both accuracy and safety. This powder is celebrated for its ability to deliver enhanced accuracy, making it a staple in the repertoire of discerning long-range shooters.
Specifications
Burn Rate
1.5 (Slow)
Bulk Density
0.915 g/cm³
Density
1.620 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 4350
Verified load data combinations using IMR 4350.
.22 Creedmoor
A-Square .224 | 72gr | A-Square e 72gr
.22 Creedmoor
Armscor .224 | 62gr | Armscor FMJ BT 62gr
.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 LRX BT 77gr
.22 Creedmoor
Barnes .224 | 77gr | Barnes Match Burner 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
.22 Creedmoor
Berger .224 | 62gr | Berger Varmint 62gr
.22 Creedmoor
Berger .224 | 64gr | Berger Varmint 64gr
.22 Creedmoor
Berger .224 | 69gr | Berger BT Target 69gr
Subsonic Loads — IMR 4350
Verified subsonic load data combinations using IMR 4350.
.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.
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 | 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
.308 Win.
MAKER .308 | 220gr | MAKER 300 blackout 220gr
Community Loads — IMR 4350
Sample load data calculated with IMR 4350.
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| Cartridge | Bullet | Barrel (in) | Charge (gr) | OAL (in) | Case Volume (GoW) | Max. Pressure (psi) | Muzzle Velocity (fps) |
|---|---|---|---|---|---|---|---|
| .224 | 62gr | Barnes TTSX BT | 24.0 | 44.2 | 2.70 | 51.0 | 58,711 (90%) | 3573 | |
| .224 | 80gr | Hornady ELD-X | 24.0 | ••.• | 2.70 | 51.0 | 64,875 (100%) | 3281 | |
| .224 | 75gr | Hornady ELD-Match | 22.0 | ••.• | 2.54 | 51.0 | 63,382 (98%) | 3268 | |
| .224 | 75gr | Hornady ELD-Match | 22.0 | 41.5 | 2.54 | 51.0 | 60,611 (93%) | 3225 | |
| .224 | 75gr | Hornady ELD-Match | 22.0 | 40.5 | 2.54 | 51.0 | 56,304 (87%) | 3153 | |
| .224 | 60gr | Nosler Partition | 22.0 | ••.• | 2.13 | 54.7 | 52,576 (82%) | 3458 | |
| .243 | 58gr | Hornady V-MAX | 20.0 | ••.• | 2.62 | 54.0 | 53,359 (89%) | 3386 | |
| .243 | 75gr | Sierra HP Varminter | 22.0 | ••.• | 2.65 | 54.7 | 57,000 (95%) | 3196 | |
| .243 | 75gr | Sierra HP Varminter | 22.0 | ••.• | 2.65 | 54.7 | 54,041 (90%) | 3146 | |
| .243 | 75gr | Sierra HP Varminter | 22.0 | ••.• | 2.65 | 54.7 | 52,591 (87%) | 3123 | |
| .243 | 87gr | Hornady V-MAX | 20.0 | ••.• | 2.71 | 54.0 | 48,631 (81%) | 2864 | |
| .243 | 100gr | Sierra Pro-Hunter | 22.0 | ••.• | 2.71 | 54.0 | 54,012 (90%) | 2822 | |
| .243 | 100gr | Speer Boat Tail Soft Point | 20.0 | ••.• | 2.70 | 54.2 | 54,694 (91%) | 2808 | |
| .243 | 62gr | Barnes Varmint Grenade FB | 24.0 | ••.• | 2.36 | 53.9 | 50,937 (80%) | 3560 | |
| .257 | 100gr | Swift Scirocco | 24.0 | ••.• | 2.83 | 51.5 | 54,476 (88%) | 3045 | |
| .257 | 100gr | Swift Scirocco | 20.0 | ••.• | 2.83 | 51.5 | 54,476 (88%) | 2913 | |
| .257 | 100gr | Nosler Ballistic Tip | 20.0 | ••.• | 2.83 | 51.5 | 54,259 (88%) | 2910 | |
| .257 | 80gr | Barnes TTSX BT | 26.0 | ••.• | 3.19 | 65.8 | 60,191 (92%) | 3550 |
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