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Find Muzzle Velocity By Bullet Drop Or Rise


Determine the Muzzle Velocity if you don't have access to a chronograph but know the drop at a known distance.

To access this calculation, click the LOADS button, then Add Load or Edit Load, then click: 'FIND VELOCITY (Based on bullet drop or true muzzle velocity using a Chronograph)'

Simple Example About How To Use This...

Let's say your .22 LR rimfire is zeroed at 25 yards using a Federal 40gn round with a BC (Ballistic Coefficient) of 0.140 - now we want to know what's the muzzle velocity.

Setup a target at 50 yards and fire 3 shots at the center (bullseye) as best as you can using good marksmanship and ultra steady rest. Its best not to do this on a windy day.

Look at the target. Did the bullets strike below or above the bullseye? Let's say the bullets grouped below the bullseye with an average drop (distance in inches from the
bullseye) of -0.55"

Enter -0.55" in the 'Actual Bullet Drop Or Rise' box, then select Zero & Drop Distance of '25 and 50', then click 'FIND MUZZLE VELOCITY'.

Shoot! will now calculate what the muzzle velocity should be based on the drop value you entered.

Zero & Drop Distance

25 and 50 - means your bullet is zeroed at 25 yards or metres and the distance at which you're measuring drop or rise is at 50 yards/metres. Recommended for Rimfire and Handgun cartridges.

50 and 100 - same as above, except your zero is 50 and distance to measure drop/rise is 100. Recommended for Muzzeloaders and Shotguns shooting slugs.

100 and 200 - sames as above, except your zero is 100 and distance to measure drop/rise is 200. Recommended for the majority of centerfire and other high velocity cartridges.