Get FPS without Chrono - App calculation from 1.46

How to get the FPS of projectile if you don't have a chronograph to be able to effectively use a ballistics calculator for consistant firing solutions
if you have already confirmed your zero then skip straight to 1.46 for the app calculations

[@EverythingAirguns]

I just tested this with my chrono and by completing with calculating on strelok it had a velocity of 827.4, when i completedwith the chrono it came up at 824.

[@kingr8]

Hi thanks for your comment, yes pretty accurate nice job, a variance in a string with 5fps is deemed good. A great way to get a fps value to calibrate your scope in strelok so can get a firing solution for distance if don't have a chrono