Norma Rifle
Norma MRP
Norma's long-standing Magnum Rifle Powder, for cases with large capacity relative to bore. Norma also cites specific loads in 243 Winchester and 25-06 Remington.
Limited US availability. Catalogued by the maker but hard to obtain through normal US retail channels.
Specifications
| Manufacturer | Norma |
|---|---|
| Product family | Norma Rifle |
| Status | Limited US availability |
| Application | rifle |
| Grain form | extruded |
| Burn-rate position | 169 of 198 (fastest = 1) — what this means |
| Typical cartridges | 7mm Remington Magnum, 300 Winchester Magnum, 243 Winchester, 25-06 Remington, 6.5-284 Norma |
Long the best-known Norma powder outside Europe. Norma's gunpowder index carries a 'Discontinued 2026' badge adjacent to the 217 and MRP listings and it is not clear from the page markup which product it applies to - confirm current status with Norma or a dealer before relying on either. Grain geometry and base are not stated on the product page. Norma canister powder is not stocked by the mainstream US reloading distributors and reaches US shelves only through occasional imports - treat availability as unreliable. Many web shops that appear to list Norma powder in the US are not legitimate retailers. Norma publishes data through its own reloading portal rather than a printed US manual.
Burn rate
Slow magnum rifle range.
Chart agreement: consistent across the three charts that list it Ranked by: Hodgdon, Vihtavuori, Wolfe/LoadData.
Powders charted near it — neighbours on the chart are not substitutes, and adjacency tells you nothing about what charge either one takes:
- Hodgdon H4831 (position 166)
- Hodgdon H4831SC (position 166)
- Vihtavuori N560 (position 167)
- IMR Enduron 4955 (position 168)
- Alliant Reloder 22 (position 170)
- Norma MRP-2 (position 171)
- Alliant Reloder 23 (position 172)
Sources
Verify the charge, not just the recipe
Good data gets you a safe starting point. It does not tell you what actually went into the case on stroke 340 — a bridged measure, a double charge, a squib. That is what an RCM Laser Powder Check is for.