My friend got me a magnetospeed v3 for my birthday last month. This a great chronograph; it is easy to setup, transfer data, and seems to be very accurate. I don't have another chrono to test against this one. I have shot in overcast and sun beaming down on the chrono, and still records shots like a boss lol.
It has confirmed my loads to be about spot on what the book says they're supposed to be. My load for 260 was 45.2g of H4831sc and the velocity was 2700fps with a Berger 140g hybrid. I grabbed the load off the can of 4831sc. My 7mm rem mag was about where it was supposed to be as well, as compared to what the book said the velocity was going to be. That load was 63g of reloader 22 pushing the Berger Hybrid 180g achieving a velocity of 2830fps. I could probably hotrod these cartridges even hotter, but these loads produce nice tiny groups.
My 308 needed adjusting. The load was 41.5gr of Acurate 4064 pushing a 168g TMK at 2400FPS. I adjusted the load to 43g if IMR 4895 to achieve 2750fps. If you're reloading, I highly recommend this chrono.
