Nammo · Extruded
N170
Ultra-slow Vihtavuori powder for the largest rifle cartridges.
- Manufacturer
- Vihtavuori
- Grain shape
- Extruded
- Burn rank
- #78
- Category
- Medium-Slow
- Temp sensitivity
- Low
- Application
- Rifle
- Origin
- Finland
- Status
- Active
Burn-rate position
Typical cartridges
.22 Creedmoor, .25-06 Remington, .270 Weatherby Magnum, .300 Norma Magnum, .300 PRC, .300 Remington Ultra Magnum, .300 Weatherby Magnum, .300 Winchester Magnum, .338 Lapua Magnum, .375 CheyTac, .50 BMG, 6.5 PRC, 6.5-284 Norma, 6.5x55mm Swedish, 6.8 Western, 7mm PRC, 7mm Remington Magnum, 7mm Remington Ultra Magnum, .416 Remington Magnum, 6.5-300 Weatherby Magnum, 7mm Backcountry, .338 Remington Ultra Magnum, .340 Weatherby Magnum, .30 Nosler
Substitutes
Listed substitutions with charge guidance. Always start at published minimums and work up.
Similar burn rate for ultra-magnums; reduce 4–6% when substituting.
By cartridge
Similar burn rate
Supply & handling
- Availability (US)
- Moderate
- Shortage-prone
- No
- Suppressor-friendly
- Yes
- Flash-suppressed
- No
About this powder
N170 is Vihtavuori's slowest standard extruded powder, designed for the .338 Lapua, .375 H&H, and similar large-capacity cartridges where case fill approaching 100% is required for optimal performance. Valued by long-range hunters and extreme long-range competitors.