I am wanting a somewhat basic (not complicated) I want to be able to enter the info with ease and get a firing solution in the field, My range is only 450 yds but I can go to ranges out to 1200yds, I wanted to use a calculator to get me as close as I can to the target with out wasting a lot of ammo when I shoot. Has anyone used this particular one? good, bad, ugly? hand held ballistic calculator any suggestions on a better one? I do want a hand held