Thread: Chronograph thoughts

Another chrony setup issue that many overlook is levelling and direction. The horizontal line over the photoelectric lenses needs to be the same parallel as the bullet path both in line front to back and left to right. If the setup is on any othet angle than dead in line then the distance the bullet travels from cront to rear sensor will change and in the microseconds measured the conversion to ft/ sec can vary markedly. So distance from muzzle, light factors And levelling are all imprtant to get consistent results.
Be mindful though that as othets have said, actual poi's per range are the best final proof of ballistic curves.
If your hunting shots are going to be under 400m then extreme precision is really not a big issue; just zero at 200-220 m and hold a little over as range increases