Two years ago, I developed loads for 600, 660 and 770 gr. gas checked cast bullets and I shot a few of them with very good success in the 1800 to 2100 fps range with decent accuracy through my relatively short barreled rifle. I I haven't been shooting much thereafter but lately I've been cleaning and re-visiting my reloading area and I found a bunch of the Beartooth, Western, Mt. Baldy and Doudna cast bullets.

The trouble is I can't find my loading data for them. The only powder that I could have used are: IMR5010, SR4759, AA5744 or VV-N165 or N170. I remember too that I posted the loads in at least one forum, but not sure if it was an AR forum.

Anyway, does anyone has a proven CB load for the .50 BMG?

If you go to the Accurate Arms reloading site and look around it a bit you'll find a place where you can ask for a load. You specify the bullet and powder you want to use and in a couple of days they will send you a recommendation.