I have just got back into reloading and only reload for my .25-06, but now I have a new .243 and only have H4831 on hand. I was going to probably use 85 grain Game King bullets for coyotes and whitetails, and wanted to know what powder to try. I had a .243 when I was in my 20's and have been sorry ever since for selling it, so the Savage combo at $350 was too good to pass up. By the way it shoots the Hornady custom 100g btsp factory load real well.