WC860, WC870, WC872 Data

[Vicodan]

I have 8 pounders of each. Originally, I was told that I could use H870 data as WC870 data. I loaded some rounds, and chronoed them. They fell WAY short. So I planned a test.

The test- I loaded 5 rounds of 7mm REM MAG with 79.0g of each powder, a 168g Nosler CC, Tula LRM primer, all in once fired federal brass. I then shot them from my 32" bench gun.
The Results-

WC860 - 3265 FPS
WC870 - 3015 FPS
WC872 - 3096 FPS

Quickload predictions -

Hodgdon H870 - 3268 FPS
Accurate 8700 - 3007 FPS
Vectan SP13 - 3087 FPS

My conclusions. For future loading, I will use H870 in QL for WC860, Accurate 8700 for WC870, and Vectan SP13 for WC872.

For further information, I will note that 860 is most dense, followed by 872 then 870.

Finally, the disclaimer. THIS WAS NOT A SCIENTIFIC EXPERIMENT, UNDER CONTROLLED CONDITIONS. I am just an ordinary reloader trying to understand the differences in Surplus powder. DO NOT TAKE MY RESULTS AS GOSPEL. Each lot of surplus powder is different, and your results may vary.

 

[ebb]

I have a bunch of WC872 and was always told to use H870 data also. Ive used it in bigger rifles and kinda liked it. I loaded some 338 hunting bullets in a 338Lapua with WC 872 and shot some real nice 300yd groups while bearing in the barrel.

 

[Vicodan]

Based upon my observations, if you use Quickload, you would be better off using Vectan SP13 data.

I was very disappointed with velocity when I first shot the WC870, expecting H870 velocity and getting 8700 speeds. That's why I did my test.