Ok fellas for years I never owned a chrono. Well I bought one now I am confused as hell. I always fired at 500 yds with a 100 yd zero and adjusted up until I was hitting on target. I then would use my software entering current data and changing velocities until my clicks at 500yds matched my actual clicks. In this instance the velocity was 3350. I have taken a lot of game with this rifle and shot critters as small as groundhogs at 700 plus based on that velocity. Today I take my new toy to the range expecting it to tell me my velocity was in the 3350 range. Well imagine my surprise when I found out I was averaging only 3100. What am I doing wrong? based on experience with this rifle if I use the 3100 velocity for a click chart it will be off.