Vihtavuori powder & 30 Luger

[P. Octo]

Originally Posted by GIFFROY

I got a good load with :
bullet : H&N (copperised lead) 86 grains HS RN .311
primer : Winchester Small Pistol Standard
case : Winchester trimmed to 21,5 mm
powder : (French) Vectan BA-9 : 5,1 grains
cartridge length : 29,6 mm
I measured the velocity of ten rounds and obtained the following results :
Mean : μ = 363,3 m/s
Maximum dispersion : dm = 18 m/s
Standard deviation σ = 5,1 m/s
No signs of overpressure and good functioning of the weapon.

Using BA 9, what would you recommend for a copperised 93 gr, .309?
This for 1906 Swiss in excellent condition. Ideally, I 'd be looking for a velocity of 360 m/s (1180 ft/s)

[GIFFROY]

Hello Octo,

Sorry for this very very late answer.

BA-9 powder seems to be a good choice.

My pet load for a Swiss 06/29 is :
bullet : H&N .311 RN HS 86 grain
primer : Winchester small pistol
powder : Vectan BA-9 : 5,2 grain
Vo (13 measures) = 174,7 m/s and a standerd deviation of 1,21%

Best wishes with this fabulous gun.

JMG / Belgium

[LU1900]

I think a BIG problem with your Vo at 174 m/s

[P. Octo]

Originally Posted by GIFFROY

Hello Octo,

Sorry for this very very late answer.

BA-9 powder seems to be a good choice.

My pet load for a Swiss 06/29 is :
bullet : H&N .311 RN HS 86 grain
primer : Winchester small pistol
powder : Vectan BA-9 : 5,2 grain
Vo (13 measures) = 174,7 m/s and a standerd deviation of 1,21%

Best wishes with this fabulous gun.

JMG / Belgium

Sorry too for a late answer but I was away at a Bench Rest competition.
I use 93gr, either jacketed or "ramate" (copper coated), so my load is slightly lighter: I use N340, 4.78gr (0.31g). As you know, N340 is a good bit milder than BA9. No problem with ejection and very good accuracy.
I test fired a military 06/29 last Thursday with factory load and they grouped in the 9 and 10 rings. Amazing! The gun is in perfect condition.

[LU1900]

Nice to know , I would use N340 for the 9 parabellum in IPSC for a tanfoglio , less pressure and more velocity , so if it work so nicely on 30 L ......

[P. Octo]

Giffroy,
As I am using a copperised 93gr, I'll try a load of 5 gr of BA 9. Any comment?

[kurusu]

Originally Posted by P. Octo

Giffroy,
As I am using a copperised 93gr, I'll try a load of 5 gr of BA 9. Any comment?

You may even start at 4.7 gr BA9. Some guns already cycle with that load.

A word of caution: BA9 doesn't strike me as the most consistent powder from lot to lot. You may want to start low on the chart and work your way up.

[P. Octo]

Good point; all the more so as my lot is, lest's say, vintage...