Vithavouri 160 vs. 560

[Guest]

I read that 560 is especially for the .270 winchester,
but 160 is used for the factory loads for the 270. I've shot some really good factory stuff, such as Federal
power shok, and Winchester supreme ballistic silver tip
that shoots fenominal at 100 to 300 yards.

 

[blacktailhunter]

Vihtavuori's 500 series is basically a double base version of the 100 series powders. This is from their website:

Burning rate like N160. Especially for .270 Winchester and 6.5 x 55 Swedish Mauser.

N500 series

Adding nitroglycerol to the traditional single base powder makes possible in addition to geometry and coating a third controlled variable of ballistic properties: energy content. Vihtavuori calls powders that have nitroglycerol added (maximum 25%) high energy NC-powders, which form N500 series.

Adding nitroglycerol to the high energy N500 series is done by impregnation. After that, the grains are coated with a new type of chemical which results in very pro

Here is a link to their website:
http://www.vihtavuori-lapua.com/rifle-p ... =2&sort=2a

The Winchester Supreme ballistic silvertip ammo use the new W780 powder in the 270 Win. You might give that a try if the black box shoots well for you.

 

[texas]

I found it to be closer to N165 than N160. Works good in 280AI w/160AB.