Description
Vihtavuori N133 is a fast-burning, single-base rifle powder designed for precision shooters and reloaders. It’s built for consistent performance in small-caliber cartridges like .223 Remington and .222 Remington Magnum. We started stocking this in spring 2025, and it’s quickly become one of our steady sellers for a reason: it delivers. Our range officer tested it against three competitors, and this powder won on reliability every time.
What Makes It Stand Out
- Extreme Consistency: Vihtavuori’s manufacturing process ensures minimal lot-to-lot variation, giving you predictable results shot after shot.
- Clean Burning: Leaves minimal residue in your barrel and action, which means less cleaning time and more shooting time.
- Temperature Stable: Performance stays reliable across a wide range of temperatures, so your loads are consistent whether you’re at the range in July or in a deer stand in November.
- 8lb Keg Value: The large container is the practical choice for high-volume shooters who demand quality without constantly reordering.
- Proven Track Record: Trusted by competitive shooters and hunters worldwide for its accuracy and dependability in the field.
Tech Specs
| Powder Type | Single-Base Nitrocellulose |
| Burn Rate | Fast |
| Primary Use | Small-Caliber Rifle (.223 Rem, .222 Rem Mag) |
| Container Size | 8 lb (3.6 kg) Keg |
| Weight (measured) | 1.9 oz |
| Country of Origin | Finland |
| Manufacturer | Vihtavuori |
Common Questions
What cartridges is N133 best suited for?
N133 is optimized for small-caliber, high-velocity rifle cartridges. It’s a top performer in .223 Remington/5.56 NATO, .222 Remington, .222 Remington Magnum, and similar varmint/target rounds. Always consult a reliable reloading manual for specific load data.
How does it handle temperature changes?
Very well. Vihtavuori powders are known for their temperature stability. You can expect consistent velocities and pressures in both hot summer and cold winter conditions, which is critical for maintaining accuracy.
Is this a good powder for beginners?
It can be, due to its consistency and clean-burning nature. However, all reloading requires careful attention to detail. If you’re new to reloading, start with published starting loads and work up slowly. Safety first.
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✅ Easy 30-day return policy
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✅ USA-based seller
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