Is IMR 4320 good for .30-06 Springfield?

IMR 4320 is commonly listed for .30-06 Springfield (burn-rate rank #60). Other powders reloaders use for .30-06 Springfield include Winchester 748, N530, 5744. Verify charges against a published load manual.

Is IMR 4320 good for 7.92x57mm Mauser?

IMR 4320 is commonly listed for 7.92x57mm Mauser (burn-rate rank #60). Other powders reloaders use for 7.92x57mm Mauser include IMR 3031, StaBALL Match, H414. Verify charges against a published load manual.

Is IMR 4320 good for .308 Winchester?

IMR 4320 is commonly listed for .308 Winchester (burn-rate rank #60). Other powders reloaders use for .308 Winchester include Shooters World Economy Rifle, Accurate 2230, A1. Verify charges against a published load manual.

IMR 4320 Powder — Burn Rate, Substitutes & Typical Cartridges

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.

IMR 4320

Burn-rate position

Typical cartridges

By cartridge

Similar burn rate

Supply & handling

About this powder

Sources & provenance