Magnetospeed that's the one that look like a bayonet!Magnetospeed no screens and will do subsonic stuff too.
Superchrono is limited in use, will not do owt but supersonic measurement.
I was thinking of getting a Magnetospeed next trip to the US but saw they won't work with cast boolits, a lot of my shooting is indoors so jacketed bullets are not allowed. One of my clubs has a Chrony with the external readout and diffusion screens, most of the time it works OK.
Sorry, should have explained that better
It was the reduced reliability using a combination of lead bullets and speeds under 1000fps that put me off it, all my indoor subsonic loads are around 800-900fps.

Good call. Any one know if Bisley rent them out!check with your local range.
My range (the tunnel at charmouth) have chronos available to use.
Whats the "known" fault?
Ive had a Magnetospeed V2 for the last 12 months, used it three or four times a month on numerous calibre's I shoot and on othe rifles Ive built / developed loads for, its never failed.
The only part ive changed was the strap, which was upgraded foc.
It works in all weathers, light, dark, works with subsonic ammo and virtually any barrel diameter..
Whats the "known" fault?
Ive had a Magnetospeed V2 for the last 12 months, used it three or four times a month on numerous calibre's I shoot and on othe rifles Ive built / developed loads for, its never failed.
The only part ive changed was the strap, which was upgraded foc.
It works in all weathers, light, dark, works with subsonic ammo and virtually any barrel diameter..,,,,,and you dont need a tripod to use it,,,,,and can read in real time the velocities....