Originally Posted by mcguyver
Stalker, you're measuring most other guns at 2 times or more the velocity of the springer. Chronos can be notoriously unreliable as velocitites increase, and a 5% variance at 200 fps may translate into 10-15% variance at 500 fps.
If you try a battery-powered light source, and you still get wild drifting, ignore the voltage element as you will have bypassed that.
The LEDs I bought are battery powered and self contained units, and seem to be working well so far.
And if chronies are that unreliable as the velocities increase, then they wouldn't be used for firearm ammunition testing, as the variations would be in the hundreds of fps from shot to shot. Yes, I'm shooting double what the srpinger is, but it's still very slow compared to firearms.