N568 Vihtavuori Powder

[Tyler25246]

I reached out to VV asking for load data on Berger 156. I'll let everybody know what they say.

Right on thanks!
I have a load worked up for the wife's gun with rl 23. Have some 26 now with 568 on the way. Figured when I slap together my prc I may try it out.

 

[kaseyfied]

I'd start around 56 with a ladder test . .5 grain increments

Kasey

 

[Tyler25246]

I'd start around 56 with a ladder test . .5 grain increments

Kasey

Thanks! I might have to give it a shot with the wife's gun see if I can get the same group size I have now with 23 but maybe a little faster.

 

[kaseyfied]

Its prob a real low charge but better safe than sorry. Chrono it for nodes

Kasey

 

[highdrum]

Its prob a real low charge but better safe than sorry. Chrono it for nodes

Kasey

I ran up to 61.9 gr N570 in my prc when barrel was fairly new. After a few hundred rounds max is 60.8, still running 3100 w/ 156s. There's a good node @ 3080 so that's where I run it 60.5. The early description of n568 was essentially short cut N570. Whether this is true or not, I don't know. N5XX series powders burn very hot, excellerate throat wear and carbon foul really badly. They are(minus 560)very temp insensitive, and usually make top velocity. There's pros and cons. Clean your barrel often! And get a teslong bore scope to keep an eye out for carbon rings in the chamber neck and throat.

 

[Tyler25246]

I ran up to 61.9 gr N570 in my prc when barrel was fairly new. After a few hundred rounds max is 60.8, still running 3100 w/ 156s. There's a good node @ 3080 so that's where I run it 60.5. The early description of n568 was essentially short cut N570. Whether this is true or not, I don't know. N5XX series powders burn very hot, excellerate throat wear and carbon foul really badly. They are(minus 560)very temp insensitive, and usually make top velocity. There's pros and cons. Clean your barrel often! And get a teslong bore scope to keep an eye out for carbon rings in the chamber neck and throat.

Have you noticed n560 is pretty temp sensitive?

 

[highdrum]

Have you noticed n560 is pretty temp sensitive?

I purchase a pound last year to try in 300wsm. Yes at about 1fps/degree from 90° to 45° could been my lot though.

 

[2ndson]

be interesting to try it out. Really like there line of powders, it's just a shame that with trying to find powder these days it may be years before that happens.

 

[kaseyfied]

It's been popping up. In a month you can have a chance at a whole line of there powders. Just have to keep on it is all.

Kasey

 

[GrayCreed]

what if you mix 33 with 26 ? lol

How bout Re21

 

[vancewalker007]

It's been popping up. In a month you can have a chance at a whole line of there powders. Just have to keep on it is all.

Kasey

Nabbed a lb of N568 today at Brunos shooters supply in Phoenix. They had a lot of Vihtavuori powders in stock.

 

[Rhovee]

Will one of you guys hurry up and shoot some N568. I have a few 8 pounders waiting to be picked up at nationals

 

[kaseyfied]

I'll be doing it soon with a 30 sherman.. 6.5 prc... and a 300 norma ai

Kasey

 

[Peter K]

I was wondering how it would work in the 338 Sherman?