Snuzem, that's why the Chronograph is called the "de-liar". It takes the fiction out of all the published velocities. As you are already discovering, the books are not all correct. If they were, you wouldn't need a chronograph. Back when we started chronographing in the 80's some of the published loads were off by 300 FPS. Now that chrony's are common the published data has significantly improved, but often your results will still be different.
