RDavies wrote:I have just bought a CED Millenium M2 and so far it is cr#p. It only reads if the bullet (22 cal and 6mm) are shot between 3-4" over the sensors, no higher.
Has anyone else seen this? Someone mentioned colouring the front of the bulet in black texta to get a reading on small bullets, has anyone else found this or have I just got a dog?
Rod, I found the CED 2 needs a couple of things right before it works ultra-reliably.
1. Must have fresh 9V battery. (I use a pack of 6x1.5V AA soldered to terminals)
2. IR light screens are essential if you want to be shooting in changing light conditions.
I had all sorts of niggly problems when I first bought my CED 2 but by using a fresh 9V battery every time eliminated most of them. The IR screens now give me an ultra-reliable (any conditions) chrono with repeatable results withing a few fps of consecutive readings.
I can shoot .177 air rifle pellets thru it at 800fps and 90gr 223s at 3200fps and never miss a reading. The height above the sensors does not make a difference but the bullet should pass through the 2 sensor screens in a straight line, ie not inclined up or down or left to right.
If you are using Bryan Litz's G7 BC figures for your ballistic calcs (if you use ballistic calcs?) then you are using data gathered thru his use of CED chronographs. Cant be all bad eh?
IanP