Ive read some good reviews, it seems that the only problems with getting accurate velocities compared to something like an oehler or better, is when the unit wasnt aligned properly with the bullet path. Makes sense considering how close the distance is between the sensors. I like the idea of not having to worry about perfect light conditions. Ive been using a beta chrony for 15 yrs and although the readings can be consistent, Im never sure how accurate the velocities are. My friend and I both have shooting chrony's and when we set them up in series, they will read 100+ fps different with the same loads. Anyone here have experience with the Steinert SuperChrono?