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What MOA is best for a shotgun?

3 MOA is probably the most popular dot size for both target shooting and self-defense, as the dot is clear, and accuracy is still precise at both close and mid ranges.

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Though it may seem a bit overwhelming at first with how many red dot sights there are to choose from, when it comes down to it, there aren’t really that many differences in red dot and reflex sights. Picking a red dot sight is easier than choosing a magnified riflescope—which can feel like the options are endless. After breaking down a few features, buying a reflex sight should be a simple process. Red dot and reflex sights are relatively simple and after deciding on how much you want to spend (your budget) and the type of reflex sight you want (open or tube,) which features suit your needs— size, type of illumination, weight, construction, etc.—it will come down to deciding which size dot is best. Good for rifles, pistols and shotguns, dot sights are a highly effective aiming tool for CQB, close to medium ranges, competition and self-defense. The biggest advantage of a red dot over any other optic or sight is the ability to acquire and hit a target incredibly quick. The size of the dot directly relates to how quickly you can locate the dot in the unit’s head’s up display and how much target area the dot covers. Both these things can significantly affect your accuracy.

What is MOA?

The illuminated red or green dot of a red dot/reflex sight is measured in MOA—minutes of angle, a unit for angular measurement of a circle. 1 MOA is equal to 1.047 inches at 100 yards, which we round down to 1 inch. Meaning, the circle (red dot) will appear to be 1 inch in diameter on a target 100 yards out. Therefore, the smaller the dot’s MOA, the harder to see. A larger MOA dot will be incredibly easy to see but may cover too much of the target at further distances to get an accurate shot. Smaller dots—1 to 2.5 MOA—are used for precise shots at longer distances. 5, 6, 6.5 and larger MOA dots will get you on target faster but will be less precise because the dot will cover a broader area on the target.

Red Dot MOA Size Comparison

1 MOA dots are usually found on “tactical” sights and provide a very precise aiming dot. Yet, those with less than perfect eyesight can struggle with locating the dot, not only on the unit itself but the target as well. To compensate, many 1 MOA red dot sights will be encircled by a larger 60 MOA circle, which also helps with close-range targets. 3, 4, and 5 MOA dots are quicker to acquire due to their larger size and are best for close range targets. Big dots are perfect for speed competition, steel shooting and for those with astigmatism. The most common dot size ranges from 3 to 5 MOA. 3 MOA is probably the most popular dot size for both target shooting and self-defense, as the dot is clear, and accuracy is still precise at both close and mid ranges. Still allowing rapid target acquisition in self-defense range, a 3 MOA red dot with an adjustable brightness feature will aid in accuracy when shooting out farther because smaller dots appear larger on brighter settings. Competitors that require speed prefer bigger dots like 6, 6.5 or even a very large 8 MOA dot. People who use red dots for handguns at close distances also prefer bigger dots.

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We designed the Ultra Shot and previous red dot sights with the dot size that was available at the time. Since then, there have been significant advances in optic quality. Our newest models, like the M-Spec, incorporate the most innovative technology available in reflex sights. About five years ago, we asked AR15.com and Sightmark Pro Staff members which types of reticles they preferred. Sightmark Product Development Director Jonathan Horton says, “Most of our red dots are 3 or 5 MOA which is easy to acquire and still have on-target accuracy at 50 or 100 yards, even with a magnifier. Going bigger is good for short range but you’re covering a lot of your target anything over 50 yards. If we do a smaller aiming dot than 3, it does provide better accuracy out to 100 but we usually design larger circle (circle-dot) around the dot for better acquisition at close range.” Most shooters purchase a red dot sight for its original intention—quick target acquisition in a self-defense situation. However, turkey hunters and fast-paced competitive shooters also appreciate the accuracy a reflex sight offers. At the end of the day, choosing the size of the illuminated dot reticle depends on your primary use and firearm you need the red dot for. What dot size do you like and why? Tell us in the comment section.

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