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Old April 7, 2013, 01:39 AM   #5
big al hunter
Senior Member
 
Join Date: March 12, 2011
Location: Washington state
Posts: 932
If you have to calculate the velocity anyway, you can set up a target at 100 and 200 yards. Zero at 100. Shoot at 200. Measure the drop and plug in the calculations until you have a velocity that matches your drop. Not as precise as a sound card, but less expensive.
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