My first chronograph was something I bought about 15 years ago from an estate sale and it was old then. It died a couple years ago and the new one I bought was a CED Millennium. Because there were times in which the light started getting low that I had problems getting readings with my old chronograph I splurged and got the Infrared Screen Set with the new unit. Today I was glad I did.
I had used the IR screens in near total darkness just to test them and got good results. But today it was just very dark and cloudy from the snow storm coming in. I put 10 rounds from my .40 S&W over the screens and got good readings but when I tried a .22 LR there was nothing. Rats! I really wanted those numbers too. I have been thinking there is something I could try to make Boomerite a little more sensitive and the normal .22 LR ammo I use for testing (CCI Stingers) hasn’t been in any of the local stores (I now see it is available some places on-line). I wanted data on some other ammo to see if I could replace the Stingers. CCI Velocitor was the prime candidate and I didn’t want to make another trip to the range or waste time getting chronograph data at the Boomershoot site.
I got out the inverter (every vehicle should have one), plugged in the IR screens, and every shot recorded a velocity.
I’m now very happy with the chronograph and IR screens.
In my rifle the Stingers clock in with muzzle velocities of about 1605 fps and the Velocitors at about 1320 fps. But from looking at my notes it appears that the Velocitors should detonate the targets at 25 yards even though they are quite a bit slower than the Stingers.