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Find Ballistic Coefficient (2 Velocities)
Calculate what the real BC (Ballistic Coefficient) should be based on 2 measured (chronographed) velocities a defined distance apart.
To access this calculation, click the LOADS button, then Add Load or Edit Load, then click: 'CONVERT/CALCULATE BC (to different drag table, Velocities between 2 points)'
Simple Example...
Let's assume you own ONE chronograph.
Setup your chronograph as though you were going to measure the muzzle velocity. Fire 3-5 shots, write them down and find the average. Then find the 'True Muzzle Velocity' using Shoot!
Now place the chronograph 50 yards or metres downrange and fire another 3-5 shots. Record the velocities and find the average. Take your time to setup the chronograph so there is no chance of shooting it!
In The Calculate BC window:
1. Enter the average 'True Muzzle Velocity' in the 'Velocity At Distance 1' box.
2. Enter the average velocity in the 'Velocity At Distance 2' box (i.e. at 50 yards/metres).
3. Then enter the distance between the 2 measured velocities. In this case enter 50 in the 'Distance Between Velocities' box.
4. Click 'Find BC'
Shoot! will now calculate what the BC should be based on your gun/load and 2 measured velocities.
NOTE: If you own a chronograph we highly recommend you do this for your favorite load. Calculating an accurate BC for your gun/load will make your ballistics calculations even more accurate and spot on!