Norma Rifle
Norma 203-B
The most flexible of the numbered Norma powders, spanning cases from 22-250 up to 358 Norma Magnum, with heavier bullets in 6mm BR and 308 Winchester and lighter bullets in 7mm-08.
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 | 125 of 198 (fastest = 1) — what this means |
| Typical cartridges | 22-250 Remington, 6mm Norma BR, 308 Winchester, 7mm-08 Remington, 358 Norma Magnum |
The B suffix denotes the current formulation. Norma's page describes application only; grain geometry and base are not stated. 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
Medium to medium-slow 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:
- Shooters World Tactical Rifle (position 122)
- Accurate 2520 (position 123)
- Alliant Reloder 15 (position 124)
- Shooters World Match Rifle (position 126)
- Vihtavuori N140 (position 127)
- Shooters World Precision Rifle (position 128)
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.