The Vihtavuori N340 is a premium single-base, medium burn rate handgun powder renowned for its clean-burning characteristics, consistent metering, and excellent accuracy. Originally developed for 9mm Luger and shotshell loads, N340 has become one of the most versatile powders in the Vihtavuori N300 series, making it an excellent choice for medium to heavy handgun loads across a wide range of calibres. It is particularly well suited to shooters looking for reliable performance in both competition and hunting applications.
Features
- Medium burn rate for versatile handgun load development
- Extremely clean burning with minimal residue
- Consistent lot-to-lot performance
- Excellent metering through powder measures
- Ideal for standard and high-performance pistol cartridges
- Suitable for competition, target shooting and hunting loads
- Manufactured in Finland to strict quality standards
Specifications
| Specification | Details |
|---|---|
| Manufacturer | Vihtavuori |
| Powder Series | N300 |
| Powder Type | Single-base smokeless powder |
| Burn Rate | Medium |
| Grain Shape | Tubular |
| Primary Application | Handgun & shotshell |
| Made In | Finland |
Popular Cartridges
Vihtavuori publishes tested load data for N340 in many of the world’s most popular handgun cartridges, including:
- 9mm Luger (9×19)
- .38 Special
- .357 Magnum
- .357 SIG
- .38 Super Auto
- .40 S&W
- .44 Remington Magnum
- .45 ACP
- .45 Colt
Always use Vihtavuori’s official, pressure-tested reloading data for your exact bullet and cartridge combination rather than substituting data from a different projectile. The manufacturer’s online reloading guide includes current data for N340 across all supported calibres.


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