Here's a calculator to estimate velocity from different barrel lengths: shootersnotes.com/calculator/velocity-estimator/
Then use a ballistic calculator: http://www.shooterscalculator.com/ballis...-chart.php
Looks like the trajectories are pretty similar out to 600.
Then use a ballistic calculator: http://www.shooterscalculator.com/ballis...-chart.php
Looks like the trajectories are pretty similar out to 600.

