I've been experimenting with the scope calibration in Chairgun, but there's no way I can get it to work properly.

Through my scope (Bushnell Legend 5-15x40) a 1.5 cm target spans exactly 1 mildot at 15 m with the magnification set to 15x. This is to be expected according to other posts on this BBS, and it means that the scope is "true" mildot at 15x. Armed with this knowledge I open up the scope calibration box in Chairgun, and enter these values. Chairgun then tells me that this equates to 2.292 MOA/Inc. What! It should read 3.438, not 2.292. If I change the magnification to 10x, then it reads 3.438.

I realize that 10x is regarded as the "true" magnification for mildots, but I fail to comprehend why Chairgun even cares about the magnification in the calibration dialog. It will clearly screw up the numbers. My scope IS definately "true" mildot (in the sense that one mildot is 3.438 MOA) at 15x, and I want Chairgun to use this value.

I might be missing something obvious here, please educate me... :-)

Regards
-Øyvind