# how to calculate bullet drop in moa

Now, as a contrast, let’s say you have a rifle capable of shooting a 1/2 MOA. So, using the example above: Output options include variable ranges and choice of units for windage and drop (inches, MOA, and mils). To recover for the drop, you will need to go up 1 MOA. Minute of Angle (known as Minute of Arc in mathematical terms) is also known as MOA in reference to marksmanship. Known as the Greenhill Formula, here's how to calculate the most compatible rifling rate-of-twist for a given projectile. Using the exact measurements, we can use the following formula: These twists and “clicks” are what allow you to actually compensate for MOA by adjusting the angle that the crosshairs are facing…. For shooting, we disregard the 0.047 inches and round it off to one. 6 inch spread1/2 MOA = 1200 Yard Effective Range.

In practice, it just means moving the dial with clicks in the negative direction as opposed to a positive direction. The distance between where your bullet hits and the target is known as the bullet drop. For a rifle that has a 2 MOA, the conversions are very simple: 100 yards * 2 MOA → 2-inch spread of each other, 500 yards * 2 MOA → 10-inch spread of each other, 1000 yards * 2 MOA → 20-inch spread of each other.

A compass has four directions (north/east/south/west) and 360 degrees. If 1 MOA needs four clicks, then 10 MOA x 4 clicks per MOA = 40 clicks.

Understanding the capabilities of the rifle will help you understand your maximum effective range. Depending on the featured MOA adjustment, it means that the turret will turn in such increments. I have never heard of this. On the other hand, the size in inches increases as you go further than 100 yards, but it’s still one minute. …be sure not to conflate the two into the same measurements. As you can see, the calculations help you aim better as opposed to complicating the aiming setup.

After that, memorize what 1MOA is at that distance. So on a mil dot scope 1 mil equals 3.6 inches at 100 yards. Review: How Good Is Aimpoint Carbine Optic ( ACO ) Compared... AR-15 Optics Buyer’s Guide & Recommended Models. You might be wondering: “Well WTF does that mean and can’t I just put the crosshairs on a target and pull the trigger!?”.

hbspt.enqueueForm({ When you reduce the magnification level to 9 the MOA would change to 5 MOA. At hundred yards you’ll notice 1 mil falls between the tack marks. …so we take a shot to determine the inches of adjustment we need to make up.

I can't recall how many... 3920 Wood Duck Drive Pelkie, MI In the real world, external forces between the muzzle and target affect bullet trajectory.

We know from our discussion above that, because of bullet drop, if we place the crosshairs directly on the target, we won’t hit the target exactly where we want. In the real world, sometimes targets are closer than100 yards…. NF knobs are true MOA, not 1/4" MOA. The inches of adjustment is the distance gap that we need to make up to hit our target. In this post, we’re going to show you what that formula is, explain Minutes of Angle from the ground up, and show you how you can confidently use minutes of angle and consistently hit your target each and every time. So, how do we translate MOA to a linear measurement? That makes the arc’s slope steeper. It has 360 degrees. I determined the adjustments by doing the exact process I outlined above for you at every distance by marking the clicks on my dope card…. As the light goes beyond 100 yards, the circle gets bigger. Something else important is calculating bullet drop on an optic when you do not have a specific bullet drop compensator built into your rifle. However, as you aim further than let’s say 600 yards, you note that you are hitting lower than the target point. your bullet will hit exactly where the crosshairs are located. First, determine the LENGTH of your bullet in "calibers" which is a measurement in hundredths-of-an-inch, the same way we measure bullet diameters.

Designed by Elegant Themes | Powered by WordPress, I think we can agree that if you’ve ever done any research on shooting better, you’ve run into something called, In this post, we’re going to show you what that formula is, explain Minutes of Angle from the ground up, and show you how you can confidently use minutes of angle. 1/2 MOA turrets You will see how easy it is to understand Minute of Angle when we break it down into digestible chunks that will aid you in hitting the bull’s eye every time you aim. Those looking to shoot with precision and to put rounds in as small a group as possible or those looking to make accurate shots at long range need to be keenly aware of a variety of different factors. …compensate for the drop of your bullet as it leaves the barrel and/or how the wind moves it. Here are the actual conversions that will hopefully illustrate what we’re talking about: Inches of Adjustment Inches of Spread → MOA Adjustment, MOA AdjustmentScope MOA Increments → Clicks. portalId: 5325588, Focus on learning MOA and leave MILS for the gun nerds who have to be different from everyone else. It’s measured in inches. Now… every scope also adjusts for MOA in different increments. to do with a minute of time that has elapsed. If you’ve followed us so far the next calculation will be easy. Typically MOA is correct at the highest magnification setting of the optic. If you’ve never seen a scope they are the little knobs on the top and... ﻿

One is an inch of spread and another is inches of adjustment, so…. Let us now think about MOA for the rifle. That is where MOA comes in as a useful measurement. Therefore, ¼ MOA turret will have ¼ increments, and the same applies to the rest. Think about the minutes in an hour. Here is how to calculate the MOA adjustments we need for the 40-inch bullet drop: The distance that you’re shooting from is what determines how many clicks the scope will need to be moved in order to compensate for bullet drop. Why Do We Need To Measure Shooting In Minutes? If that flashlight cast its light at 1 MOA, then at 100 yards the light would only illuminate a 1-inch circle. I personally carry a “dope card” (the scope equivalent of a cheat sheet) on my rifle which tells me the MOA adjustments for my scope at every distance.

I guessed right. This means if you want a complete and total list you’ll have to make tack marks, large enough to see at a good distance. 7 x 1.047= 7.329 (how many inches equals 1 MOA at that range) 23.5" / 7.329 = 3.20 MOA of correction But it would be easier to run your charts in true MOA and then just correct off that and not even think about inches as they are not neeed. Think about clicks in terms of a simple number line with positive and negative numbers. If you look at how a bullet moves, it does so in an arc which is not a perfect one. If you have a ½ MOA scope, you will need 20 clicks if you apply the analogy in the last statement above. Since most rifle ranges are spelled out in hundreds, MOA is very handy to understand and know. The whole point of these conversions is to convert the inches of adjustment into clicks on the scope. Shooting with the wind is another story for another time (be patient young grasshopper,) but it starts with understanding MOA. For the long pass, you’re going to give the ball a higher angle in order to reach the receiver. IN A HURRY? Buying a scope for a new rifle (300 Win Mag) used Hornady's ballisticcalculator to get bullet drop of 54" at 500Y, 312" at 1000Y &921" at 1500Y.