Hodgdon Powder Company · Extruded
IMR 4320
A medium rifle powder at burn-rate rank #60 of 90, listed for 5 cartridges in the reference.
- Manufacturer
- IMR
- Grain shape
- Extruded
- Burn rank
- #60
- Category
- Rifle Medium
- Temp sensitivity
- Moderate
- Application
- Rifle
- Origin
- —
- Status
- Discontinued
Burn-rate position
FastestSlowest
Typical cartridges
7.92x57mm Mauser, .30-06 Springfield, .308 Winchester, 7mm Remington Magnum, .270 Winchester
By cartridge
7.92x57mm Mauser also used: N110, N120, Norma 201
.30-06 Springfield also used: N110, Winchester 748, N530
.308 Winchester also used: N110, Shooters World Economy Rifle, Accurate 2230
7mm Remington Magnum also used: Superperformance, D072.5, Accurate 4350
.270 Winchester also used: Reload Swiss RS60, Winchester 760, S243
Similar burn rate
Supply & handling
- Availability (US)
- Unavailable
- Shortage-prone
- No
- Flash-suppressed
- No
About this powder
Medium-slow extruded rifle powder with a burn rate between IMR 3031 and IMR 4350. Was a go-to powder for .30-06 Springfield and 8mm Mauser across several decades before being discontinued around 2019. Lower density than most IMR extruded powders, making it fill large cases efficiently.
Sources & provenance
- Manufacturer IMR — IMR — published load/burn-rate data archived