Re: Loads for .300WM-.300WSM
If you go to the Beyond 1000 yards, there are several threads with lots of data with the 208 in the 300WM. Here is one that I have posted:
With Nosler brass, 208 A-max and H1000 powder, 215M, seated to 3.640, here's what I have tried.
Shot at 300 yards at 80 degrees
Started at 76.0 grains- shot MOA, vel avg was 3097, 6 shots.
76.3- had minor pressure signs and velocity avg 3000 fps, 3 shots in 1 1/2" group. I don't know why the first load was much faster.
With R22 powder, tested at 100 yards:
71.2 grains- 2900 fps avg- shot .557" 6 shots, 13 fps ES.
71.6 grain- shot .292" 5 shot group- 2917 fps avg, shot the best, but 27 fps ES.
71.9- 1" group- avg 2945 fps, 32 fps ES.
72.2 grains- .507" group, 2947 fps avg with 3 fps ES. Awesome load.
72.5- over MOA, wierd results- 56 fps ES, 2980 fps avg.
72.7- HOT, over max- 3046 fps- 1 shot (.000" group!)
I haven't had time to try the other rounds I loaded for it with H1000. I started over from 75 grains, working up in .2 grains up to 75.8, which I haven't shot yet.
Just beginning, I would start at 73 or 74 grains of H1000, and work up. If you get a load working, post your results!
Hope this helps!
