Barnes, you are right my instructions are backwards regarding this setting. I'm not convinced though. I use a 5-0-5 and I can weigh out a 53gr charge using my eyeball method and put it on the gempro and it will read 53.00gr what I want it to weigh. I can then load a charge on the gempro and weigh it on the 505 and see its not exact and put back on the gempro and see that the 505 was right as to heavy or light.
I'm a bit of a perfectionist, but will 0.02gr effect my accuracy during midrange (3-600yds) competition? I don't think I'll ever notice, but at 1000yds I think it will be noticeable? At a 1000yds in all honesty if I can squeeze that last bit of SD out of my speed I will be better off.
Also since I've managed to change to the more sensitive setting, the unit still doesn't register air current unless I blow on it. My AC is blowing my 505 all over and the gempro shows no changes.. I thought I had somethin goin for me... dang.