Ricky ran some downrange velocity tests today, so that I could calculate the Ballistics Coefficient.... He shot 10 shots, in two 5 shot strings, with the Chrony at 1 yard, refilling between strings, and then moved the Chrony to 51 yards and repeated (50 yard separation).... The 10 shot averages were 803.5 fps (2.6% ES) and 773.2 fps (1.7% ES).... The average temperature was 82*F, altitude 269 ft., barometric pressure 30.03", and humidity 89%.... I ran these numbers through my own Spreadsheet, the JBM BC Calculator, and ChairGun, and using the G1 Model got BCs of 0.163, 0.164, and 0.165, so the average BC (G1) at 50 yards, at an average velocity of 788 fps is 0.164, corrected to ICAO conditions....

Thanks for your help, Ricky, much appreciated....

Bob