It's definitely on my list to try.
Looking at Viht's load data for the 6br and 90gr scenar load data N540 really brings the 6br to life with almost a 300fps gain.
I'm running 2780 with a 105 Bart's hammer at Vhits max load of 28.9 N140.
VV equivalent to Varget
- Thread starter boltfluter
- Start date
Looking at Viht's load data for the 6br and 90gr scenar load data N540 really brings the 6br to life with almost a 300fps gain.
I'm running 2780 with a 105 Bart's hammer at Vhits max load of 28.9 N140.
XTR
F-TR obssessed shooting junkie
A large percentage of FTR shooters have moved to N150 in our 308s with heavy bullets.
The only issue with it is that it is more bulky than Varget, so you can find yourself limited by case volume, and if you use a throw N150 bridges worse than any powder I’ve ever used.
Never a problem in my auto trickler or my 419 funnel, but in a 21st Century funnel or my Harrells Culver it was common for it to bridge.
The only issue with it is that it is more bulky than Varget, so you can find yourself limited by case volume, and if you use a throw N150 bridges worse than any powder I’ve ever used.
Never a problem in my auto trickler or my 419 funnel, but in a 21st Century funnel or my Harrells Culver it was common for it to bridge.
urbanrifleman
Site $$ Sponsor
N150 is closer to h4350.
N160 is closer to h4831.
N160 is closer to h4831.
N150 is the usual 6BR Viht grade used on the Eastern side of the Atlantic with 105s.
Burn rate charts show most Viht powders as being slower-burning than they work out in practice. N150 is much closer to VarGet than most people think. N160 is much closer to the 4350s than IMR-4831 which the burn charts link it to.
N135 is very much 'faster' than most burn rate charts show. This is the canister version of Viht's bulk powder for European 7.62 NATO loads, ie 144-147gn bullet.
We lost the Hodgdon / ADI powders in Europe a few years ago due to environmental / safety regulations and I've been running a series of comparative tests for 'REACH' - compliant powders against H4895 / VarGet using 223 with the 77gn SMK in an F-Class rifle. This includes six Viht grades from (the now withdrawn) N530 to N550 via N135, 140, 540, and 150.
http://www.targetshooter.co.uk/?p=3811
http://www.targetshooter.co.uk/?p=3856
http://www.targetshooter.co.uk/?p=3934
http://www.targetshooter.co.uk/?p=3956
Note remarks on the long-freebore tight chamberl Loads used were above loading manual maxima, the extra freebore allowing 0.8-1gn extra at same pressures.
No, nothing like, or at any rate only if you believe burn rate charts.
Thanks for this!
Owens85
Gold $$ Contributor
Same here
Give N-133 and N-135 a try. I run N-133 in a .20 Practical with great results. Very clean, too.
As Laurie points out, burn rate charts are a poor way to pick powders. The VV powders are in the same range as the H----- powders. You must work up loads in your rifle. I might find N150 works well for me when N160 or N140 works better for you.
N140 gives excellent results in the .204 with 40gn bullets - not as high MVs as some, but excellent groups. N130 is a bit over-fast burning for this cartridge although it works with 30/32s. 32gn is the only bullet Viht provides N130 data for. Despite appearing to be a very small cartridge, the 204 Ruger has a relatively high case capacity to bore area ratio of c. 940 thanks to the very small 20-calibre bore area, virtually identical to that of the 6.5 Creedmoor. (By comparison, the apparently similar 223 Rem is a considerably lower 780, and therefore uses faster burning powders until you get up to 'heavies' at over 75gn, and even with this cartridge I'd not use N130 for anything heavier than 55gn.)
brokeasajoke
Silver $$ Contributor
Also, 168smk and Varget in my Remington 308 has been kind of an easy button.
Go back enough years and N140 was the standard powder with 155s in the UK equivalent discipline 'Target Rifle'. (This was before Viht powders were imported into the US - we've had them a lot longer.)
Quite early on, I decided I preferred N150 in such loads despite everybody telling me it wouldn't work, as it was 'too slow'. It's worked very well for me with this bullet weight nevertheless in several 308 Win rifles and barrels, but both N140 and N150 are very suitable.
Move up to the 185 Juggernaut and Berger 200.20X and N150 is the powder in UK FTR used by nearly all top shooters. Small primer Lapua brass and heavy loads / high pressures.
HTSmith
Silver $$ Contributor
Yep the premium powder costs less
I would say VVN140 is a shade faster than Varget and VV150 is a shade slower. Varget is made super consistent by kernel size combined with how they use burn retardant on it. VV is made consistent by the fact it is cotton powder
Therefore VV is more consistent in any given temp. But, a powder using a burn retardant, like Varget, is going to then be more consistent over a wider range of temperatures. Cotton being more consistent as a base in cell structure than ground up wood structure of most current powders.
Therefore VV is more consistent in any given temp. But, a powder using a burn retardant, like Varget, is going to then be more consistent over a wider range of temperatures. Cotton being more consistent as a base in cell structure than ground up wood structure of most current powders.
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