hello..for deer caliber's used..or maybe used..243..257..280..coyote's 223..22/250..243...i always' set my zero @ 1'' high @ 100..or dead on @ 100..tim mentioned 3" high @ 100...i think mac said that somewhere in the past...i tend to think that might be the way to go..i asked this question on another forum a week or so ago regarding coyote's..& recieved lot's of answer's mainly based on calculation's & ballistic program's..not that that's all bad..i'm just thinkin where most guy's zero based upon experiance..i don't have any problem's..to speak of...after my last range trip last weekend with my 280 handi..i'm printing about 2"--2 1/2" high..now i just need to get something in the crosshair's..aye..