Comparing chronograph results

Today we put my pro chrono inbetween the ohler 35p first two sensors and shot some 22 subs and minimag through it.
The greatest variation between the readings was 4fps which I thought was bloody amazing.we forgot to do the same with the old shooting chrony but will do that next time.
The photo of some body holding it is just to show where we strapped it for the test.

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Interested to see the Shooting Chrony results.

And in changing light which has been the biggest issue with natural light dependent chronys, also different projectiles, Iv found the long pointy high BC going fast can change results a bit.

just remember to aim low when using a chrony