[quote=Forester;207167]Going from 3040 to 2960 could, I think, be a function of temperature differences, primer lots, powder lots, bullet lots...or the combination of all 3. If all of those things were exactly the same, then light may well be the issue.
You forgot about the 2840. I was using the same box of bullets, primers, and same pound of powder. The temp range was from 58 to 64. The only difference was the lighting conditions. I have talked to Charles Hardy, who, from what I can gather, is very high on the food chain at CED about this several times. He is the one who, without knowing me from adam, with no payment or credit card numbers, just a guy on the phone, sent me the second set of sensors and another processor to try.
He has about eleventeen times more knowledge about this stuff than anyone I have ever talked to. He insists that the better, or more accurate, or more sensitive, the sensors are as far as processing accuracy, the more different lighting conditions affect overall readings. The es, av, sd....should be all the same, but the over all speed might be different. Just like my readings. Good numbers as far as es, av, ect. Just the AV changes. I Finlay got it into my thick skull....IT'S THE LIGHT...STUPID..:o
I just read the above and it is obvious that I can't explain it like Mr Hardy. But I am convinced that the IR setup will work very well, simply because when I do my load development (which is why I need it) I like to shoot later in the evening, when the wind is down and the mirage is minimal. Cloudy, calm days also work well also.