H-1000
I agree with BobinNH.
I have found that RL-22 is great powder for the .300WM. However, there is a lot of variation lot to lot.
Also, in my rifle, I lose about 2 fps velocity per degree of temperature drop from around 70-75 degrees F.
Since loading H-1000 with 180 gr. Partitions the SD's have run under 10 fps and accuracy is on par with RL-22.
FWIW,
Jim
