Vihtavuori Releases NEW N570 Powder for Magnums
Vihtavuori (VV) has started producing N570, a new high-energy, double-base powder suited for magnum cartridges. The burn rate of N570 is similar to Vihtavuori N170 and Hodgdon H870, making it somewhat faster than 24N21 or Retumbo. The new N570 has the slowest burn rate of the five powders in N500-series of high-energy propellants. N570 is an extruded tubular powder with a large kernel size (similar to VV 20N41 and 20N29) and a high bulk density.
The characteristics of this slow burning, high-energy powder are well-suited for large volume cases like the 6.5-284 Norma, 300 Winchester Magnum, 300 Remington Ultra Mag, 338 Lapua Magnum or the 30-378 Weatherby Magnum.
Reloading Data for the new N570 Powder is available in the latest edition of the Vihtavuori Reloading Guide. (PDF).
CLICK HERE for Vihtavuori Reloading Guide (8th Ed.).
The new N570 was developed at the request of magnum cartridge reloaders. Vihtavuori told us: “Powder users have repeatedly asked for a powder suited to the needs of the largest magnum rifle cartridges. We have developed our new N570 High Energy powder to meet this special need in the market. N570 was developed to bring out the very best performance and velocity in large volume magnum rifle cartridges.”
VV Recommends Weighing N570 Charges
Because N570 has very large kernels, Vihtavuori advises that reloaders should always WEIGH N570 charges rather than rely on throws from powder measures: “We recommend that charges of this high-energy N570 powder be weighed, as measures do not always deliver consistent charges. This is especially true when the powder being used is of such a large kernel configuration. This may lead to a potential for either under- or over-charged cases, if the charges are thrown straight from the measure and not weighed.”
Vihtavuori Powders are imported in the USA by Hodgdon Powder Company and Kaltron Outdoors, and are marketed worldwide by Nammo Lapua, www.lapua.com.
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Tags: Gun Powder, Propellant, Vihtavuori, VV
I’ve been using this powder for two years now, what’s new?
Good point. VV N570 has been available in Europe for about two years. However, due to long delays in the USA DOT approval policy, N570 was only recently approved for domestic shipment in the USA. Hence it is a “new” product for Americans.
Thanks for your post though. This is not a “new” or reformulated version just for the American market — it’s the same stuff that’s been sold previously in Europe.
Ah, that explains it
Ha! Might have explained it in March 2010, but what’s the reason it can’t be found in April 2011?
Do you have load data for n-570 in the 26 Nosler?
Thanks,
Robert
How temperature stable is this powder?