A chronograph is designed to measure the velocity of your bullets by using electronic sensors. You simply make sure that your shot crosses over the sight lines of these sensors, and you’ll get a readout of your velocity. No matter what type of reloading you are interested in doing, checking your loads using a chronograph is important at least for the sake of safety and consistency. For the volume reloader, spot-checking a few rounds every so often is a good idea and adds an extra level of safety. For the precision reloader, you cannot get by without a chronograph to test and fine-tune your loads. The following is a roundup of some of the top models available on the market today.
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Caldwell Ballistic Precision Chronograph
Competitive Edge Dynamics M2 Chronograph
PACT Model 1 XP
PACT Professional XP
Competition Electronics ProChrono Digital
Shooting Chrony – Beta Master Shooting Chrony Blue