I am working up a load for my new A-bolt/leupold 4.5-14x 40 w/cds combo. I am using Berger 168g, H4831 and FED 215. The load data I got from Berger didn't have H4831 so I loaded rounds using a low starting load (60g) and worked up to 65 in .5g increments. I loaded some extra rounds with 60g for fouling shots and to get a fair zero before starting load development. I shot a .862 5 round group with the 60g of H4831 at 100yds. I then continued with the ladder test and had some nice groups with powder charges of 62g - 64.5g. So I guess my question is if I shot a .862 5 rnd group at 100yds should I go with that or try to squeeze some more MV out of that 168g Berger? Another question is how do you all measure your groups? I measure from the outside to the outside of the furthest bullets and then subtract the caliber.