starting load

[rjtfroggy]

Anyone have a starting load for VV130 or 133 for 6BR?
80 - 105 gr. bullet.

 

[marchboom]

The VV website only lists N140 and N540 as suitable powders for 90 and 105 gr bullets.

 

[SeabeeKen]

I would suggest N-135 as a compromise.
N-133 would be burnt out in 6" of barrel with a 105 gr. 27 gr N-135 would be a good place to start with a 105 gr. its also a slightly cooler burning powder and has been good to me.

 

[Clancy]

Both of those powders are too fast. I doubt you find any data and even if you do, I wouldn’t….

I use N135 for bullets up to 80 and N140 for anything heavier.

 

[Pirate69]

Both of those powders are too fast. I doubt you find any data and even if you do, I wouldn’t….

I use N135 for bullets up to 80 and N140 for anything heavier.

Sounds like good advice. I used QuickLoad to model a 95 gr Sierra HPBT MK from a 24" barrel. Both Remington and Norma cut 6mm BR chambers were modeled. I targeted the same approximate chamber pressure for each powder. These are the results:

Norma-----Powder-----Charge-----FPS------PSI
------------N130--------26.0--------2699----49,473
------------N133--------27.0--------2708----49,017
------------N140--------29.3--------2773----49,323


Rem--------Powder-----Charge-----FPS------PSI
------------N130--------25.0--------2697----51,625
------------N133--------26.0--------2709----51,384
------------N140--------28.2--------2774----51,729

Hope this helps.

 

[hoz53]

Anyone have a starting load for VV130 or 133 for 6BR?
80 - 105 gr. bullet.

yeah i would use n135 with an 80 and i have been n150 for 105s lately

 

[rjtfroggy]

Thanks to all that responded.
I finally found a load with VV135. Apparently my seating depth was way off, took it from 3/4" group(5 shots) down to a 3/8" for 5 shots. With a little more tweaking should get down a little more and then it will be ready to go. I hope

 

[SSchnd]

for a 105-107 ish I'd also be a N135 or N140 guy as that has been good in the 6BRAi with a 107 but my buddy is using N150 for 108-109 Bergers for LR sling with success.
N135 in my 6BRAi (which I know is not your straight br) without my records handy I was testing powder charges under SMK107 and about 29.8 was around 2820 I recall going in .3 gr increments just to see a velocity,

I pulled up the Garmin app found a couple test strings:

Lapua brass in 6BRAI so I have some more room than you with SMK 107 1.900 Base to ogive, touching not jammed. I few miles on this barrel too.
N135
29.8 2840 fps
30.1 2861 fps
Went to 30.4 and was about 2880 ish IIRC but for some reason the garmin info is gone

I am currently running H4895 30.6 gr, Lapua, CCI 450 SRP, 1.880 BTO SMK 107 2890 fps again in the BRAi. Not sure this will offer any reference to your BR but hope it may offer some help.

29" Kreiger 1/8 twist

 

[jackieschmidt]

Both of those powders are too fast. I doubt you find any data and even if you do, I wouldn’t….

I use N135 for bullets up to 80 and N140 for anything heavier.

^^^^^^[
2495 works quite well, but it is a really course grain powder.

 

[hoz53]

for a 105-107 ish I'd also be a N135 or N140 guy as that has been good in the 6BRAi with a 107 but my buddy is using N150 for 108-109 Bergers for LR sling with success.
N135 in my 6BRAi (which I know is not your straight br) without my records handy I was testing powder charges under SMK107 and about 29.8 was around 2820 I recall going in .3 gr increments just to see a velocity,

I pulled up the Garmin app found a couple test strings:

Lapua brass in 6BRAI so I have some more room than you with SMK 107 1.900 Base to ogive, touching not jammed. I few miles on this barrel too.
N135
29.8 2840 fps
30.1 2861 fps
Went to 30.4 and was about 2880 ish IIRC but for some reason the garmin info is gone

I am currently running H4895 30.6 gr, Lapua, CCI 450 SRP, 1.880 BTO SMK 107 2890 fps again in the BRAi. Not sure this will offer any reference to your BR but hope it may offer some help.

29" Kreiger 1/8 twist

i have used n140 with 105s a fair amount also but not n135- mabie im missing out.