We not only carry the Magneto Speed chronos and accessories, we use them to test our manufactured ammunition. This is the easiest chrono I have ever used. Literally - I watched a short you tube video - and installed it on a firearm in less than 3 minutes - the first time! You don't have to be concerned with whether you have enough light - or if the shadows are interfering with the results - etc. There are also accessories that allow for you to hook it up to a phone or to use with a large muzzle brake. This is a must have for the reloaders.
https://www.westernmetal.ca/shooting...y/magnetospeed