"This information comes from the EGW Evolution Gun Words website."
What is M.O.A?
M.O.A. stands for Minute of Angle. 20 M.O.A. or Minutes of Angle is equal to 1/3 of one degree. Which M.O.A. do I need to purchase?
We recommend 0 MOA for shorter distance shooting (0-600 yards). See your scope manual to determine the amount of elevation adjustment or range you have. For long distance shooting we recommend 20 MOA (600-1000 yards). The 20 MOA angled downward mount will allow you to see and zero where your bullet will strike over a long distance like 1000 yards. How far will Zero or 20 M.O.A. allow me to shoot?
Zero M.O.A. is generally used for shooting 0 – 600 Yards depending on your scope and caliber
20 M.O.A. is generally used for shooting 600 – 1000 + yards depending on your scope and caliber
At 100 yards, one M.O.A. is about 1" (slightly more).
The scope mount cants downward at 20 M.O.A., which will allow you to zero your gun at a greater distance.
At 600 yards, a 20 M.O.A mount will point the scope down .120” or point the barrel up depending on your perspective.
One M.O.A. = 1" at 100 yards or 6 inches at 600 yards. 20 M.O.A. = 200 inches at 1000 yards.
For Example:
At 650 yards with a .308, with your scope centered (middle of adjustment), a 20 M.O.A. mount will be right on.