Just got a Caldwell chrono and tested my old stand by 44 spl reload of 7.5 gr of unique with a 240 gr, SWC,,Was expecting 950 FPS,,but I got average of 1050 out of a 7 1/2” barrel colt SAA,,and 1038 FPS from 6” S&W ,,So is it my chrono,,or is Unique powder the culprit for the 100 FPS increase over the reloading manuals?