The Magnetospeed reads everything, but the problem I initially had with it (again) was time. Mounting it on the barrel often changes point of impact and accuracy, so I had to spend more time and money reshooting the same load with the Magnetospeed bayonet off the barrel. I also had to be constantly switching it from one barrel to another. Eventually I solved both problems by modifying a Caldwell Rock front rifle rest to hold the bayonet, which works very well.
If the LabRadar folks ever overcome its limitations on bullet size and velocity, I would probably buy another. But for now am pretty happy with the Rock-mounted Magnetospeed.
I sure would like to hear more about this Caldwell Rock modification you came up with and maybe a picture or two
Thanks!
