I have been recently using magneto speed
Until now I have never had much use for a chronograph
because they never gave accurate enough readings or where
I have only used it so far with my 338 Edge Imp and 338 Allen Mag.
I was a shooting proven loads out of both of these rifles. They both
showed an E.S. under 20 and an S.D. Under 10. The magneto also spit
out velocity numbers I knew these loads should be producing.
With my F1 (chrony which isn't known as a top of the line chrono) es
was around 50 with the same loads and velocity would be all over the place.
That's if I got a reading period.
In the short amount of time I've been using the magneto speed I have never had
a missed reading. And the whole set up is simple and easy to use.