Can someone explain why when I take the cosine of an angle and multiply it by the LRF distance, it does not match up with exbal? If I use the same angle, I get two different numbers for scope dialing. I am trying to decide if I need an ACI or if an angle finder and the pda will do it. Example: 35* angle(.819 cosine) 867 yds MOA needed = 9.75 Exbal 35* Angle 867 Yards MOA needed = 10.5 Not a huge difference, approx. 6" at that range. Maybe I should just enter the angle in exbal on the pda and go that route. Any advice???