Vihtavuori N500 High Energy
Vihtavuori N565
A newer powder developed for the .338 Lapua Magnum and adopted for military sniping, long-range precision and ELR competition.
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 | 177 of 198 (fastest = 1) — what this means |
| Typical cartridges | 338 Lapua Magnum, 300 Norma Magnum, 338 Norma Magnum, 300 Winchester Magnum, 7mm Remington Magnum, 30-06 Springfield |
Single-perforated extruded grains, same physical size as N560. Vihtavuori states it is extremely temperature stable, has improved hygroscopic stability, and carries a decoppering agent; they also describe it as REACH compliant without DNT or phthalates.
Burn rate
Deliberately placed between N560 and N570, splitting the gap between them.
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:
- IMR 7828 SSC (position 174)
- Alliant Reloder 25 (position 175)
- Accurate High Country (position 176)
- Vihtavuori N170 (position 178)
- Accurate MAGPRO (position 179)
- IMR Enduron 7977 (position 180)
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.