Here is a little more info. The chronographed velocities on that 4831 load came out for an average of 2033 feet per second and the muzzle energy came out at 1835foot pounds. It is dead on at 25 yards and again at 125 yards. The data for this load came from a 1977 issue of the Handloader. The other bullet mold that I have is or was made by Rapine and my rifle seems to like it better than the RCBS mold. I really like my little rifle and intend to pass it on to my son.