Over cast days are the best for accurate chronograph readings
I've read that before, but I don't understand how accuracy would be impacted. I see how it could impact getting a reading, but if it gets a reading why would accuracy be changed?
I chrono'ed my 338 Laupa on a bright sunny day with only the diffusers in use, with no additional shade and got 2820 FPS average velocity. My drop were low at 972 yards. I recohrono'ed on an over cast day and I got 2791 FPS avereag velocity and my drop were correct with exbal ballistic software and not low. The difference of only 29 FPS is only important in predicting trajectory at long distance and not so much at 5 to 6 hundred yards IME
I was useing an Oehler 35 in both instances
I got banned on another web site for a debate that happened on this site. That's a first
