Description
Vihtavuori's N133 propellant is a highly regarded choice among dedicated rifle reloaders, known for its fast burn rate characteristic, ideal for precision handloading in smaller caliber rifles. As an extruded powder, N133 is particularly respected for its uniform granule size, promoting consistent metering through various reloading equipment, although care should be taken to ensure precise measurement. Its performance shines in benchrest and varmint shooting applications, most notably in popular calibers such as the .223 Remington and the 6mm PPC, where consistency and repeated accuracy are paramount. Temperature stability is a standout feature of N133, enabling dependable performance across a range of environmental conditions, which makes it an excellent choice for shooters seeking reliability season after season. Experienced reloaders will appreciate the balance this powder offers between velocity and pressure, simplifying load development through its predictable performance and straightforward ballistic behavior. Vihtavuori’s reputation for producing clean-burning powders is evident with N133, reducing fouling and enhancing barrel life—key advantages for the competitive shooter seeking precision and endurance.
Specifications
Burn Rate
4.6 (Medium)
Bulk Density
0.870 g/cm³
Density
1.580 g/cm³
Temperature Sensitivity
Low
Suitable Substitutes
Powders with a similar burn rate that may be suitable alternatives (also see burn rate chart):
Standard Loads — Vihtavuori N133
Verified load data combinations using Vihtavuori N133.
.17 Rem.
Berger .172 | 25gr | Berger Varmint 25gr
.17 Rem.
Hornady .172 | 20gr | Hornady V-MAX 20gr
.17 Rem.
Hornady .172 | 25gr | Hornady V-MAX 25gr
.17 Rem.
Impala Bullets .172 | 20gr | Impala LWHV LS 20gr
.17 Rem.
Impala Bullets .172 | 22gr | Impala LW CFN 22gr
.17 Rem.
Lehigh Defense .172 | 20gr | Lehigh Defense Controlled Chaos 20gr
.17 Rem.
Nosler .172 | 20gr | Nosler Varmageddon BTip 20gr
.17 Rem.
Nosler .172 | 20gr | Nosler Varmageddon 20gr
.17 Rem.
Peregrine .172 | 21gr | Peregrine VLR-4 21gr
.17 Rem.
Peregrine .172 | 22gr | Peregrine VLR-5 22gr
.17 Rem.
Styria Arms | AERO .172 | 19gr | AERO SB-SR,- smax:7.00 19gr
.17 Rem.
Styria Arms | AERO .172 | 19gr | AERO SOLR-SR,- smax:6.90 19gr
.17 Rem. Fireball
Berger .172 | 25gr | Berger Varmint 25gr
.17 Rem. Fireball
Hornady .172 | 25gr | Hornady V-MAX 25gr
.17 Rem. Fireball
Impala Bullets .172 | 22gr | Impala LW CFN 22gr
.17 Rem. Fireball
Peregrine .172 | 22gr | Peregrine VLR-5 22gr
.20 BR
Barnes .204 | 20gr | Barnes Varminator HP FB 20gr
.20 BR
Barnes .204 | 26gr | Barnes Varmint Grenade FB 26gr
Subsonic Loads — Vihtavuori N133
Verified subsonic load data combinations using Vihtavuori N133.
.30-06 Spring.
Berger .308 | 230gr | Berger Hybrid OTM Tactical 230gr
.30-06 Spring.
Berger .308 | 230gr | Berger Hybrid Target 230gr
.30-06 Spring.
Discreet Ballistics .308 | 188gr | Discreet Ballistics Selous Machined Expander 188gr
.30-06 Spring.
Hornady .308 | 175gr | Hornady Sub-X 175gr
.30-06 Spring.
Hornady .308 | 190gr | Hornady Sub-X 190gr
.30-06 Spring.
Lapua .308 | 200gr | Lapua Subsonic 200gr
.30-06 Spring.
MAKER .308 | 200gr | MAKER 200 Grain .308 Expanding Subsonic Blackout Bullets 200gr
.30-06 Spring.
MAKER .308 | 220gr | MAKER 300 blackout 220gr
.30-06 Spring.
Peregrine .308 | 155gr | Peregrine Subsonic 155gr
.30-06 Spring.
Reichenberg .308 | 154gr | Reichenberg HDB Subsonic 154gr
.30-06 Spring.
Reichenberg .308 | 200gr | Reichenberg Subsonic 200gr
.30-06 Spring.
Sierra .308 | 220gr | Sierra MatchKing 220gr
.30-06 Spring.
Styria Arms | AERO .308 | 95gr | AERO SUB-I,- smax:11.30 95gr
.30-06 Spring.
Styria Arms | AERO .308 | 115gr | AERO SUB,- smax:11.40 115gr
.30-06 Spring.
Styria Arms | AERO .308 | 190gr | AERO SUB,- smax:23.90 190gr
.308 Win.
Discreet Ballistics .308 | 188gr | Discreet Ballistics Selous Machined Expander 188gr
.308 Win.
Hornady .308 | 175gr | Hornady Sub-X 175gr
.308 Win.
Hornady .308 | 190gr | Hornady Sub-X 190gr
Community Loads — Vihtavuori N133
Sample load data calculated with Vihtavuori N133.
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| Cartridge | Bullet | Barrel (in) | Charge (gr) | OAL (in) | Case Volume (GoW) | Max. Pressure (psi) | Muzzle Velocity (fps) |
|---|---|---|---|---|---|---|---|
| .204 | 32gr | Hornady V-MAX | 26.0 | 24.5 | 2.26 | 31.0 | 44,179 (75%) | 3599 | |
| .224 | 60gr | Berger FB Varmint | 20.0 | 28.3 | 2.17 | 34.6 | 56,101 (90%) | 3133 | |
| .224 | 60gr | Berger FB Varmint | 20.0 | ••.• | 2.20 | 34.6 | 55,317 (89%) | 3123 | |
| .224 | 60gr | Berger FB Varmint | 20.0 | 28.0 | 2.17 | 34.6 | 54,317 (88%) | 3107 | |
| .224 | 40gr | Hornady V-MAX | 24.0 | ••.• | 2.40 | 45.5 | 50,502 (86%) | 3819 | |
| .224 | 40gr | Hornady V-MAX | 24.0 | ••.• | 2.40 | 45.5 | 44,527 (76%) | 3691 | |
| .224 | 53gr | Peregrine VLR-5 | 22.8 | ••.• | 2.17 | 27.9 | 45,832 (85%) | 2986 | |
| .224 | 52gr | Speer Target Match | 22.0 | ••.• | 2.13 | 28.0 | 44,077 (82%) | 2969 | |
| .224 | 53gr | Peregrine VLR-5 | 22.8 | ••.• | 2.24 | 27.9 | 42,989 (80%) | 2946 | |
| .224 | 52gr | Speer Target Match | 22.0 | ••.• | 2.13 | 28.0 | 42,525 (79%) | 2936 | |
| .224 | 52gr | Speer Target Match | 22.0 | ••.• | 2.13 | 28.0 | 41,002 (76%) | 2907 | |
| .224 | 52gr | Speer Target Match | 22.0 | ••.• | 2.13 | 28.0 | 40,582 (76%) | 2900 | |
| .224 | 55gr | Sierra HPBT GameKing | 23.6 | ••.• | 2.13 | 27.9 | 44,411 (83%) | 2900 | |
| .224 | 52gr | Speer Target Match | 22.0 | ••.• | 2.13 | 28.0 | 39,972 (74%) | 2887 | |
| .224 | 55gr | Sierra HPBT GameKing | 23.6 | ••.• | 2.13 | 27.9 | 41,307 (77%) | 2838 | |
| .224 | 52gr | Speer Target Match | 22.0 | ••.• | 2.13 | 28.0 | 35,795 (67%) | 2792 | |
| .224 | 55gr | Hornady FMJ BT | 20.1 | ••.• | 2.13 | 27.9 | 38,072 (71%) | 2723 | |
| .224 | 52gr | Speer Target Match | 22.0 | ••.• | 2.13 | 28.0 | 31,241 (58%) | 2671 |
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