I am relatively new to chronographs, I have been using my shooting Chrony Master for several years now and have been happy with the results. Lately I have been working up some loads for my shorty 444 project with BTB 290 LFN GC's. I set up dual ladder tests with H322 and H4198 and headed up the ladder. At starting charges of both I was getting 2-3 out of 5 shots that would not record, and by the time I was near my max loads none were recording a velocity. The Chrony error code was bullet did not cross first sensor, which is odd because it crossed and was detected by the second sensor and everything was lined and leveled. So what is up with this? Is it the Gas checks doing something funny? The same day I chronographed 9mm, 22 lr and .223 and each shot recorded as expected. I did try moving the chrony from 12 out to 15 feet with no changes..