Vihtavuori N500 High Energy
Vihtavuori N550
Developed around the .30-06 Springfield and .308 Winchester and extended to medium and large cases with heavier bullets; suited to hunting rounds and more powerful loads generally.
Official Vihtavuori load data →
Specifications
| Manufacturer | Vihtavuori |
|---|---|
| Product family | Vihtavuori N500 High Energy |
| Status | Currently produced |
| Application | rifle |
| Grain form | extruded |
| Composition | double-base |
| Burn-rate position | 147 of 198 (fastest = 1) — what this means |
| Typical cartridges | 30-06 Springfield, 308 Winchester, 6.5x55 SE, 300 Winchester Magnum |
Double-base, nitroglycerine-enhanced. Symmetrical tubular grains.
Burn rate
Vihtavuori puts its burn rate close to N150; on the chart it follows N150.
Chart agreement: consistent across charts - listed in the same relative neighbourhood by every publisher that carries it Ranked by: Hodgdon, Vihtavuori, Shooters World, Wolfe/LoadData.
Powders charted near it — neighbours on the chart are not substitutes, and adjacency tells you nothing about what charge either one takes:
- Winchester 760 (position 144)
- Accurate 2700 (position 145)
- Norma URP (position 146)
- IMR 4350 (position 148)
- IMR Enduron 4451 (position 149)
- Alliant Reloder 16 (position 150)
Sources
Other Vihtavuori powders
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.