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July 21st, 2011

Vihtavuori Reloading Data Updated for Seven Cartridge Types

If you read our 2011 Super Shoot Report by James Mock, you’ll see that Vihtavuori N133 powder is the overwhelming choice of top short-range benchrest shooters for loading their 6PPCs. Other Vihtavuori powders, such as N135, N150, and N550 are also very popular for other match and hunting cartridges.

If you currently use a Vihtavuori (VV) powder, or you plan to try a Vihtavuori powder in the near future, visit www.Lapua.com soon. Load info on Lapua’s Vihtavuori Reloading Data Page has been updated (or added) for the following calibers: .222 Remington, .223 Remington, .223 WSSM (new caliber data), .22-250 Remington, 6.5 Grendel, 6.5×47 Lapua, and 7.62x53R. In the updated tables, you’ll find VV powder recipes for a wide variety of bullets from Hornady, Lapua, Nosler, Sierra, Speer and other bullet-makers.

Though these recipes are fairly conservative, always start low and work up gradually when using a new powder for the first time. Likewise, you should back off your load if you change ANY component or if you have fitted a new barrel to your rifle.

Vihtavuori N100 Series
The N100 series powders are single-base powders used mainly in rifle calibers. There are ten N100 series powders with different burning rates and suitability from the .17 Remington up to the .458 Winchester Magnum and two special powders for .50 BMG.

N500 Series
The N500 series powders are impregnated extruded rifle powders with Nitroglycerol added as extra energy component. If higher loading densities and more energy are needed, N500 series powders are competent alternatives for the N100 series powders. N500 series High Energy powders are available in five different burning rates.

Story tip by EdLongrange. We welcome submissions from our readers.
Permalink News, Reloading 5 Comments »
February 1st, 2011

New 9th Edition of Vihtavuori Reloading Guide is Now Available

The new, 9th Edition of the Vihtavuori Reloading Guide has been released. The complete Reloading Guide can be downloaded for FREE as a PDF (Adobe Acrobat) file. The rifle reloading data has been expanded and revised with more powder selections for existing bullets. The load data for .243 Winchester has been revised extensively, and there is new caliber data for 6mm Remington, 6.5×55 Swedish and 6.5×55 SKAN. Load info for the .260 Remington, 6.5×55 Swedish, 30-06, and 45/70 has also been expanded in the 9th Edition of the VV Reloading Guide.

CLICK HERE for FREE Download of Vihtavuori 9th Ed. Reloading Guide PDF.

The 9th Edition includes updated loading data for the following cartridge types:

Centerfire Handgun
.45 ACP

Centerfire Rifle
6mm Remington
.243 Winchester
.260 Remington
6.5×55 Swedish (Modern Action)
6.5×55 SKAN (Modern Action)
.30-06 Springfield
.45-70 Government
Error Correction: In the hard-copy, USA-printed version of the 9th Ed. Vihtavuori Reloading Guide, there is an error on page 25 concerning modern 6.5×55 loads. The data is correct in the PDF version of the Reloading Guide (linked above). CLICK HERE to download print version correction.

Story sourced by Edlongrange.

Permalink - Articles, Reloading 3 Comments »
February 27th, 2010

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.

Vihtavuori N570

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.

Permalink New Product, News, Reloading 6 Comments »