Has anyone out there done much loading with the Ram Shot Powders? I tried 23 grains of X-terminator in my .223 with 69 grain Matchkings. The best group ever (0.166") and 2845 fps. I was impressed, it seems to burn real clean also. I bought a pound of TAC and was going to work up a load for the 22-250, and 243. Anyone have any help as to where to start? Thanks in Advance.