Vihtavuori N500 High Energy
Vihtavuori N568
The most recent addition to the N500 series, aimed at large-capacity and belted magnum cases running heavy-for-caliber bullets, for long-range competition, accuracy work and hunting.
Official Vihtavuori load data →
Specifications
| Manufacturer | Vihtavuori |
|---|---|
| Product family | Vihtavuori N500 High Energy |
| Status | Currently produced |
| Application | rifle |
| Grain form | extruded |
| Composition | double-base |
| Temperature stable | Yes — claimed by the manufacturer |
| Burn-rate position | 189 of 198 (fastest = 1) — what this means |
| Typical cartridges | 6.5 PRC, 300 PRC, 338 Lapua Magnum, 7mm Remington Magnum, 300 Winchester Magnum |
Vihtavuori uses short-cut grains here, which helps metering for a powder this slow, and states it provides exceptional temperature stability and is insensitive to humidity changes.
Burn rate
Slow; on the chart it sits between N565 and N570.
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 Retumbo (position 186)
- Winchester StaBALL HD (position 187)
- IMR Enduron 8133 (position 188)
- Ramshot LRT (position 190)
- Vihtavuori N570 (position 191)
- Alliant Reloder 33 (position 192)
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.