1 MOA at 1000 yards is roughly 10.47 inches.
Given 1 MOA is roughly 1.047 inches at 100 yards. Most shooters remember it as 1 MOA equals 1 inch at 100 yards for easier calculation.
Please reference this chart below:
| 100 yds | 1" |
| 200 yds | 2″ |
| 300 yds | 3" |
| 400 yds | 4" |
| 500 yds | 5″ |
| 600 yds | 6" |
| 700 yds | 7" |
| 800 yds | 8″ |
The math is actually very simple, it's liner and relative.
1 MOA at 1000 yards is basically 10 times 1000 yards, which equals to 10.47 inches.
This becomes very important math for shooters to know for adjusting elevation and windage turrets and zeroing.
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Doing The Math
- Divide the distance to your target (in yards) by 100. This gives you the inches per MOA for that distance.
- To find the MOA adjustment, divide the inches you need to adjust by the inches per MOA from the first step.
- Multiply the number of clicks your scope has for 1 MOA by the MOA adjustment. This tells you how many clicks to adjust on your scope.
Remember, if you're using 1.047 inches for every 100 yards instead of 1 inch, multiply the inches per MOA from the first step by 1.047.
MOA Tips For Rifle Shooting
Always Think 1 MOA Instead of 1.047
Let's say you're aiming at a target 400 yards away. A MOA grows by 1" every 100 yards. So, at 400 yards, 1 MOA becomes 4" circle at 400 yards.
If math isn't your thing, here's an easy way: To find out how big 1 MOA is in inches, divide the yards you're shooting by 100. Let's say your target is 250 yards away. Divide 250 by 100 and you get 2.5. This means 1 MOA at 250 yards is 2.5".
Unless you are as fast as a calculator, always simplify the math by using a whole number in your head. Working with decimal can be very frustrating.
Figure out how many 1 MOA steps you need for your adjustment
Let's say you want to change by 8″ at 400 yards. Remember, you're using 4″ steps for this. Two of these 4″ steps make up the 8″ change.
So, you adjust by 2 MOA.
Take the inches you want to adjust and divide it by the inches in 1 MOA for that distance. Let's say you're shooting at 600 yards and need the bullet to move 18″.
At 600 yards, 1 MOA equals 6″. Now, divide 18 by 6. You get 3. This means a 3 MOA change at 600 yards makes the bullet move 18″.
Focus on MOA instead of counting scope clicks
Most retail scopes change by 1/4 MOA with each click. However, some might change by 1/8, 1/2, or 1 MOA with every click.
Let's say your scope changes by 1/4 MOA for each click. If you want to move up 2 MOA, you'll need 8 clicks. This is because 4 clicks equal 1 MOA. 8 Clicks give you 2 MOA adjustments.
