I have seen up to 6% variation from lot to lot in powders I was told were kept to 2% variation.(At that time, the industry standard was supposed to be 4%)(+2-2%)
These days I simply don't care about velocity variation as much as point of impact variation, which is the single most important factor when I am hunting with loads made prior to the season.
100fps is nothing in the field and when you are talking about magnums shooting with velocities over 3000fps, it really doesn't matter. The deer simply won't care.
AGW
