Q: I have been measuring bullet velocities with a Chrony chronograph. I am told that the result is the instrumental velocity of the bullet at a point between the muzzle and the Chrony which is positioned 12 feet from the muzzle when using my .300 Remington Ultra Mag.
How do I convert this figure to velocity at the muzzle?
— Theo Taylor
A: Why would you bother? If the screen of your Chrony is reasonably close to the muzzle you can expect to lose 1fps for each foot of range. Therefore, if the Chrony is situated 12 feet from the muzzle, you would be losing 12fps.
Your reloads will vary more than this from shot to shot. So why waste your time?
To quote the bard: it’s “much ado about nothing”.