MOA (Minute of Angle) and MRAD (Milliradian) are two different units of angular measurement commonly used in the field of firearms and optics. They are used to measure the size of objects or the adjustment values in rifle scopes. Here's a comparison between the two:
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MOA: MOA is an angular measurement unit that represents 1/60th of a degree. It is also commonly referred to as "minute of angle." In practical terms, 1 MOA subtends approximately 1.047 inches at 100 yards. MOA is often used to measure the size of groups, the accuracy of rifles, or the adjustment values on turret knobs in rifle scopes.
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MRAD: MRAD, short for "milliradian," is an angular measurement unit equal to 1/1000th of a radian. A milliradian is a smaller unit than a minute of angle. One MRAD subtends approximately 3.6 inches at 100 yards. MRAD is widely used for long-range shooting and has become increasingly popular due to its ease of use in mathematical calculations.
Key differences between MOA and MRAD:
- Measurement: MOA is based on a 1/60th degree system, while MRAD is based on a milliradian system.
- Conversion: MOA has a conversion factor of approximately 1.047 inches at 100 yards, while MRAD has a conversion factor of approximately 3.6 inches at 100 yards.
- Precision: MRAD offers finer adjustments due to its smaller unit size, allowing for more precise corrections compared to MOA.
- Common Usage: MOA is more prevalent in the United States, while MRAD is commonly used internationally and has gained popularity in various shooting disciplines.
It's important to note that both MOA and MRAD have their own advantages and enthusiasts, and the choice between them often comes down to personal preference, shooting style, and the equipment being used.