Lindcott Armory Hodgdon Powder Company · Extruded
IMR 4350
IMR4350
Classic slow-medium IMR extruded powder from the original Du Pont family.
- Manufacturer
- IMR
- Grain shape
- Extruded
- Burn rank
- #67
- Category
- Rifle Medium
- Temp sensitivity
- Moderate
- Application
- Rifle
- Origin
- USA
- Status
- Active
Burn-rate position
FastestSlowest
Typical cartridges
Substitutes
Listed substitutions with charge guidance. Always start at published minimums and work up.
H4350 · HodgdonPublished
Similar application range but not identical. Start at lowest published charge for the target powder and work up. H4350 tends to be slightly slower.
By cartridge
.270 Winchesteralso used: Reload Swiss RS60, Winchester 760, S243
.30-06 Springfieldalso used: Winchester 748, N530, 5744
.308 Winchesteralso used: Shooters World Economy Rifle, Accurate 2230, A1
7mm-08 Remingtonalso used: IMR 3031, Alliant Reloader 15, Vihtavuori N140
.243 Winchesteralso used: N530, Accurate 2520, RS52
Similar burn rate
Supply & handling
- Availability (US)
- Common
- Shortage-prone
- No
- Suppressor-friendly
- Yes
- Flash-suppressed
- No
About this powder
IMR 4350 is one of the most historically significant American rifle powders — widely used for decades in hunting and target applications. Note: IMR 4350 burns slightly slower than Hodgdon H4350 despite the similar name, and they are NOT interchangeable without load data verification. Classic choice for .270 Win, .30-06, and belted magnums.