For many years used 4320. Really good powder for '06. Usually used 53gr in bolt guns, an 52gr in Browning BAR. Found 4895 usually not as accurate at 4064, 4230, or 4350. If you need to, try 49-50gr 4895 and go easy. Sorry, never tried 4831. Even with the 26" barrel on one of mine, I could not see any advantage over 4320 or 4350. Luck.