This is for a Mark X, 24" barrel 30-06 ( 10" twist) looking for 64K pressure limit, Or enough to get 2350-2400 fps range? Especially interested in some of the newer powders, i.e. R16, etc. I used 50.5/IMR 4350/240w in some other 24" '06 rifles for an honest 2400fps. . Thanks