![]() I mean really, it’s a fairly niche case that you need hard data on the exact speed of your bullets.īut if you reload, want to shoot precision long range, or shoot competitively - a chronograph can be critical.įor reloaders, you want to be able to do things like find velocity nodes, check to see how much speed you’re getting from different loading methods or to check for safety. And Why Do I Need One?įor the average shooter, a chronograph is probably useless. Think of it like sonar but… different… don’t ask me how. The same thing that weather stations use, doppler radar is a radar that shoots a microwave signal and uses the signal bouncing back to measure the distance and velocity of whatever it is being aimed at. Instead of light small electromagnetic sensors are set along a line.Ī projectile disturbs the electromagnetic fields and math happens and a speed given.įinally, the fanciest type is through doppler radar. Others work on a similar method, but a different form. Light on the first sensor is disturbed, and then X milliseconds later the light of the second sensor is disturbed. The chrono looks at the light above or below two sensors set apart by about a foot and waits for the light to be disturbed. The most common and “basic” way is with light. There are a number of ways this can be done. ![]() These can be bullets, arrows, bb pellets, shotgun pellets, and more depending on the kind of chrono you pick up. What Exactly Is a Chronograph?īasically, it’s a science thing that lets you measure the speed of projectiles.
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