Minute of Angle or, as commonly referred to by shooters, MOA sounds fancy but in reality, it’s very simple. In this post, I’ll attempt to explain in simple terms why MOA is used in marksmanship, and how it can be a useful tool when measuring for accuracy and distance.

OK, let me give you an example of how MOA works in a practical sense.

The .300 Winmag rifle we used in the Navy SEALs was a 1 Minute of Angle gun. Meaning that with match-grade issued ammunition the gun could shoot as accurately as 1 MOA. This means that at 100 yards the gun could hold one-inch diameter groups.

These would equate to: 200 yards = two-inch diameter; 600 yards = six-inch diameter; 1,000 yards=10-inch diameter