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Lindcott Armory

RUAG Ammotec · Extruded

Norma MRP

Magnum Rifle Powder — Norma's primary slow magnum extruded powder.

Also known as Norma MRP, MRP
Manufacturer
Norma
Grain shape
Extruded
Burn rank
#66
Category
Magnum Rifle
Temp sensitivity
Moderate
Application
Magnum Rifle
Origin
Sweden
Status
Discontinued

Burn-rate position

FastestSlowest

Rank #66 on the burn-rate scale · Magnum Rifle

Typical cartridges

.240 Weatherby Magnum, .243 Winchester, .25-06 Remington, .257 Weatherby Magnum, .260 Remington, .264 Winchester Magnum, .270 Weatherby Magnum, .270 Winchester, .270 WSM, .280 Remington, .30-06 Springfield, .30-378 Weatherby Magnum, .300 H&H Magnum, .300 Norma Magnum, .300 Remington Ultra Magnum, .300 Weatherby Magnum, .300 Winchester Magnum, .300 WSM, .308 Norma Magnum, .338 Lapua Magnum, .338 Norma Magnum, .338 Winchester Magnum, .338-378 Weatherby Magnum, .340 Weatherby Magnum

Substitutes

Listed substitutions with charge guidance. Always start at published minimums and work up.

H4831SC · Hodgdon Community

Similar burn rate for .30-06, .270 Win, and similar cartridges. Work up from starting data.

By cartridge

.240 Weatherby Magnum also used: N550, URP, Reloader 17
.243 Winchester also used: N530, Accurate 2520, RS52
.25-06 Remington also used: Winchester 760, 2700, Vihtavuori N140
.257 Weatherby Magnum also used: N170, Reloader 25
.260 Remington also used: Norma 200, IMR 3031, N550
.264 Winchester Magnum see the finder for alternatives
.270 Weatherby Magnum also used: N550, Norma 204, N560
.270 Winchester also used: Reload Swiss RS60, Winchester 760, S243
.270 WSM also used: Alliant Reloader 16, URP, Reloader 17
.280 Remington also used: N550, N555, Reloader 17
.30-06 Springfield also used: N110, Winchester 748, N530
.30-378 Weatherby Magnum also used: N570, 780, H1000

Similar burn rate

#66Vihtavuori N150Vihtavuori #66H4350Hodgdon #65IMR 4955IMR #65N560Vihtavuori #65Norma 204Norma

Supply & handling

Availability (US)
Limited
Shortage-prone
No
Suppressor-friendly
Yes
Flash-suppressed
No

About this powder

Norma MRP (Magnum Rifle Powder) is a slow-burning Swedish extruded powder that has been a standard for European magnum hunting loads for decades. Excellent in .300 Win Mag, 7mm Rem Mag, .338 Win Mag, and .264 Win Mag. Limited US availability but respected worldwide for quality and consistency.

Head-to-headNorma MRP vs H4831SCHead-to-headNorma MRP vs Norma 204Head-to-headNorma MRP vs N560Head-to-headNorma MRP vs Vihtavuori N150 ChartSee it on the burn-rate spectrum BrowseEvery powder, ranked by burn rate

Sources & provenance