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MOA for Rifle Scopes - Made Easy {101}

Moa can be confusing at first but it's pretty easy to understand once you get the basics. They're just units of measure.

Minute over angle (MOA) is an angular measurement, not linear, and is 1/60th of a degree from a 360 degree circle. Visualize it like this, starting at the same point if you where to draw two lines that spread apart 1/60th of a degree at first they would be very close but as time went on the distance would increase and the lines would continue to become further apart. The army training guide shown gives a good visual and understanding of how it works.

MOA in relation to firearms, refers to the rifle's ability to accurately and consistently repeat a group of shots at a specific distance. 1 moa is a group of shots 1.047 inches apart at 100 yards and a group of shots 2.094 inches apart at 200 yards is still 1 MOA. This process can be repeated indefinitely. It only stops when the bullet you're firing exceeds it's limits by losing velocity and succumbing to gravity completely.

For this post we're going to use 1 inch at 100 yards because its easy to visualize and explain, but when making your own calculations use 1.047 inches at 100 yards. The difference is tiny but when bringing your A game it's big. For example at 1000 yards 1 inch MOA is 10 inches but when using 1.047 inches it would be 10.47 inches. Still not a huge difference but if your going to do it, why not do things right. To calculate MOA just multiply 1.047 by the distance in yards then divide by 100

So how does this make you a better shot? First, you need to know what type of trurrets are on the optic. Most are 1/4 inch MOA. The distance of the target is also needed. Let's use 100 yards to keep it simple. If you are centered but 1 inch low

4 clicks would be need for a bullseye. Using the same principals 2 inches low at 200 yards you still would adjust 1 MOA or 4 clicks. Once understood in these terms, the principle remains the same. For example: 2 inches low at 100 yards is 2 MOA or 8 clicks. At the end of the day the best way to figure out MOA is to push out the noise and not over complicate things. Start with a data set, stick to the basics, and then expand off that.