[Sako92S]

Some test results so far

Powder: Vihtavuori N133
Loading: 1,802g
Bullet: 9,7g PPU
Case: Sellier Bellot
Barrel: 410mm (16")
Temperature: -7 Celsius
Velocity: 636 m/s
IPSC PF: 313

Powder: Vihtavuori N133
Loading: 1,802g
Bullet: 9,4g PPU
Case: Sellier Bellot
Barrel: 410mm (16")
Temperature: -7 Celsius
Velocity: 645 m/s
IPSC PF: 307

Powder: Vihtavuori N133
Loading: 1,802g
Bullet: 9,7g 303 British
Case: Sellier Bellot
Barrel: 410mm (16")
Temperature: -7 Celsius
Velocity: 643 m/s
IPSC PF: 316


Velocity measured 3 meters from barrel
Powder load is going to be raised to 1.85g in next test session.
There were no pressure marks on used case.
We are going to make sure that it will meet major classification with both my barrels 16" and 18"
20 degrees warmer weather it will do that definately.
Well it's still winter here in Finland.

[Patrick Sweeney]

Sako,

For those who are metrically-challenged, could you convert to grains? And do you know if the plants for Sako/Tikka and Vihtavuori are anywhere near Helsinki?

[Sako92S]

Sako/Tikka plant is about 50 km and Vihtavuori/Nammo Lapua is 500 km from Helsinki.

Covert info:
1m = 3.2808 ft
1g = 15.432gr
1mm = 0.039371 in

[Steve Moneypenny]

That's awesome, I hear that Mike voit has a good load for Major 7.62x39mm might try emailing him too. I have played some but not nearly enough.

Good luck i'm interested in results !

[Sako92S]

Wolff makes factory ammo that meets major PF.
154gr soft point PF322 18" Colt 7.62x39 barrel.

Nowadays my loading is running 712 m/s, Powder VV N120, Bullet PPU 150gr
PF 328 measured from 16" Colt 7.62x39 barrel.

[Sako92S]

MY LAST SEASON MAJOR LOADS FOR 7.62x39

Case: Lapua 98 (berdan case)
Bullet: 145gr PPU
Powder: VV N120 25,43gr
OAL 55.5-56mm
Speed 2309
PF 334
Measured from AR-47 semi automatic rifle 16"
_________________________________________
Case: Lapua 98 (berdan case)
Bullet: 151gr PPU
Powder: VV N130 27,00gr
OAL 55.5-56mm
Speed 2260
PF 341
Measured from AR-47 semi automatic rifle 16"
__________________________________________
Case: Lapua (boxer case)
Bullet: 151gr PPU
Powder: VV N130 27,00gr
OAL 55.5-56mm
Speed 2227
PF 336
Measured from AR-47 semi automatic rifle 16"
____________________________________________
Case: Sellier Bellot (boxer case)
Bullet: 151gr PPU
Powder: VV N130 28,50gr
OAL 55.8mm
Speed 2251
PF 339
Measured from AR-47 semi automatic rifle 16"
_________________________________________
This is what I normally use at competitions:
Case: Lapua or Sako (boxer case)
Bullet: 150gr PPU
Powder: VV N130 26,50gr
OAL 55.5mm
Speed enough
PF enough to make major
Measured from AR-47 semi automatic rifle 16"

[Carlos]

BTT

[BBunin]

Those loads would be safe to fire from a Yugo SKS, right?

[Harmon]

what is the major power factor for a rifle? 320?