![7th%20page.jpg](http://[url="http://i1019.photobucket.com/albums/af313/djspinj/Chairgun%20Use%20Article/7th%20page.jpg"][img]http://i1019.photobucket.com/albums/af313/djspinj/Chairgun%20Use%20Article/7th%20page.jpg)
With quality pellets like JSBs, I don't worry about weight variation even though there are various slight "hundredths-of-an-inch" differences in a tin. I don't see a POI difference at the distances I shoot at, even at the farthest I shot my powered-down Cricket at, which is 50 yards at the range not too long ago. If you really want an exact pellet weight to use, then I suggest you weigh your pellets. Choose which weight among those that you've managed to sort all the pellets into and use that one to plug into Chairgun.
Me too. I've only puttered with the program but haven't found a way to hold fpe constant, vary weight slightly (0.1grain), and observe the predicted shift in POI.
I do weigh my pellets and select a single weight (+/- 0.1%). I have also noted when doing this that it is rare to get head size variation in single weight pellets. I like to understand the theory and maths behind the empirical data.
The controlling factor seems to be the programme using the 'zero' as a fixed datum rather than allowing it to be a reactive output.
