Just tried it for the first time today. Great speeds with 180s in 7 stw. I've always liked h1000 and retumbo. Just wondering why it's not more popular. I see it costs a couple more dollars. Like to try it in a 300 rum with 230 bergers soon.

This is what my RUM did with the 230 Berger and 220 Scenar



Here is how it worked with the 175 Nosler AB









I like the stuff a lot. Seems like it works pretty similar to 33 and Retumbo. Nice stuff.

I love Vihta Vuori powders and use many...........but anymore I stick to the 1 series powders, the 5 series are barrel burners like non other. If its a rifle you don't plan on shooting much you will probably be OK, If it's a rifle you plan to shoot a lot go for the N170

N560 is the most accurate powder I used in my 300WM's.It's given me a one hole group at 200yds.I also used it behind a TSX to kill a leopard.

N570 hammers in the 28N

It's my current fav in the 26 Nosler with the156 EOL Berger. Accuracy is great.

And I don’t see pressure signs. With 869, RL-50, RL-33 and Vv-20N41, I see pressure signs before reaching max book loads.

570 is slightly faster than those, is high energy and in the 26 Nos edges them slightly. It’s just hard to meter and may be hard on barrels. After working up loads, the 26 doesn’t get shot that much. It’s a hunting rifle.

DF

Its weird I've never seen pressure with it. I get scared and stop before typical pressure signs. I've always liked retumbo and h1000 and work up to see where pressure is then back off. Shot some 230s out of a 300 rum this morning before it got windy.

It is a great powder got a couple drawbacks in its hard on throats and dirty but for speed, accuracy and temp stable its good.

It's not popular because it's a double base powder with poor temperature stability. It's all about velocity.

Temp stability good, temp stability bad.

Which is it?

DF

Temp stability GOOD!

If its not popular as all the guys running bigger 30 cals with the heavy bullets what they use. 28 Noslers etc.
And why can't you find any.

It’s almost hard to believe I killed a bunch of stuff with R22 before I found out I got lucky a lot.

I hear ya....



DF

You may need to check that out with Llama Bob....

DF

O.K. LOL

This place is good for a chuckle. VV N570 is a non-temp-stabilized double base powder. You can expect something on the order of 1 ft/s per degree F of velocity shift. That's enough to move you off an accuracy node with only a modest change in the weather, which is why the powder is of little general interest. If you want a temp stable powder in the same slow magnum burn rate, H1000 and Retumbo are what's available. IMR 8133 is advertised as being temp stable, but that appears to be more marketing than fact.

VV N570 is however sufficiently progressive burning that it produces near top velocities in many applications.

Checking on line, seems the consensus on Vv n-570 temp stability, it’s not the best, it’s not the worst.

For someone like me who doesn’t have extreme temp spreads where I hunt, not an issue. I like the velocity without pressure and for that, it’s very good.

I like Vv powder in general, although it costs more. In certain applications, it’s worth the premium.

DF

How much of it have you shot? Call up some of the top rifle builders like Ryan Pierce or Alex Wheeler ask themwhat they think about its stability or how much they use.
Little general interest, Holy [bleep] everytime theres a jug comes avaliable its gone in a second.

It seems good and accurate and cleaner shooting than 33 right now. I’m with you. I check it out at a few temps at distance and make my choices.

N570 is nearly as stable as Retumbo in my 28N. From 20F to 75F is see roughly 25fps diff...