Recently used my Chronograph indoors and had problems with the florescent lights fixed by the light kit, then still had problems so shut off florescent lights put on the incandescent and again worked until I shot 357 hot loads and got a ton of errors thinking it was the propellant reaching the Chronograph before the bullet so going to try the front entrance of the coffin to see if that works. Sent from my SM-G950U using Tapatalk