Thanks for the info. I am using R-P commercial cases, and WLR primers. In the data you sent, I see that 49.0 gr of BLC2 was recommended for 150 gr bullets.
The WCC846 surplus powder that I have is supposed to have a burning rate the same as BLC2. I've decided to drop down three grains and start from there. SO I have made some initial test loads (24 rounds each) with 46.0, 47.0, and 48.0 grains of WCC846. I'll try those, in order, at the range, looking for pressure signs and comparing cases and recoil to some M2 ball that I have.