Why is ballistic testing done with the chronograph near the gun? To determine how lethal the projectile is, shouldn't the chronograph be stationed at various distances from the gun? This would help you calculate the foot pounds of energy at the point of impact. When the chronograph is near the gun, the results are the maximum but as the projectile travels, it slows down and the foot pounds of energy begin to tapper off.
Chrono Test Down Range?
- Thread starter Red2x4
- Start date
You can download apps like Chaingun. It will give you charts for fps and fpe at different distance.
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Jayman is correct. If you know what speed you have at the muzzle with a particular pellet and it's ballistic co-efficient, it is a simple matter to check the charts and determine fps, fpe, drop and drift at any number of distances that you might be shooting at.
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Depends on how accurate you want your data. ChairGun is not exact. Very good for close references. If you really want exact figures, you need to shoot at paper every 5 yards more or less. Then you will know the exact poi. I set my chrony at different distances. Just set a 2x4 in front of it to save hitting it.
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