dragbag

January 30, 2014, 10:44 PM

This is as easy as it gets. A radian = 57.295646 but for this application 57.3 is close enough.

100 yards divided by 57.3 = 1.745201 yards in one degree of angle at 100 yards. To convert the yards to inches in one minute of angle (moa) multiply 1.745201 by (.6 a constant) .6 * 1.745201 yd = 1.04712 inches, rounded to 1.047”

Two steps …… how ever many yards divided by 57.3 then that sum multiplied by .6 gives you the inches in one moa at that yardage.

Examples to the nearest 100th

1. 25 yards/57.3 = .4363 * .6 = .26” moa

2. 600 yards/57.3 = 10.4712 * .6 = 6.28” moa

3. 1000 yards/57.3 = 17.45201 *.6 = 10.47” moa

For the scope’s click value divide inches by the number of clicks the scope has in one moa. Divide by 4 if it is ¼ moa scope or by 8 if it is a 1/8th moa scope. At 1000 yards ¼ moa each click is 2.6” a 1/8th moa click is 1.3"

4. 400yards/57.3 = 6.98 * .6 = 4.18” moa

Lets say the bullet drop is 17” at 400 yds.

17/4.18 = 4.05” moa

Round to 4 moa……..To move up 4 moa - 17 clicks on a ¼ moa scope, or 33 clicks on a 1/8 moa scope.

Okay you made the 4 moa adjustment and you are still 1 inch low. Each click of a ¼ moa scope is 4.18 divided by 4 = 1.047 inch so you would adjust up 1 click with a ¼ moa scope. Each click of a 1/8 moa scope is .52 inch so you would adjust up 2 clicks.

Say you are 1-1/2 inch low. With ¼ moa scope you either adjust up 1 click and be ½” low or 2 clicks up and be ½” high. 3 clicks on 1/8 moa scope is 1.56” so you are right on.

100 yards divided by 57.3 = 1.745201 yards in one degree of angle at 100 yards. To convert the yards to inches in one minute of angle (moa) multiply 1.745201 by (.6 a constant) .6 * 1.745201 yd = 1.04712 inches, rounded to 1.047”

Two steps …… how ever many yards divided by 57.3 then that sum multiplied by .6 gives you the inches in one moa at that yardage.

Examples to the nearest 100th

1. 25 yards/57.3 = .4363 * .6 = .26” moa

2. 600 yards/57.3 = 10.4712 * .6 = 6.28” moa

3. 1000 yards/57.3 = 17.45201 *.6 = 10.47” moa

For the scope’s click value divide inches by the number of clicks the scope has in one moa. Divide by 4 if it is ¼ moa scope or by 8 if it is a 1/8th moa scope. At 1000 yards ¼ moa each click is 2.6” a 1/8th moa click is 1.3"

4. 400yards/57.3 = 6.98 * .6 = 4.18” moa

Lets say the bullet drop is 17” at 400 yds.

17/4.18 = 4.05” moa

Round to 4 moa……..To move up 4 moa - 17 clicks on a ¼ moa scope, or 33 clicks on a 1/8 moa scope.

Okay you made the 4 moa adjustment and you are still 1 inch low. Each click of a ¼ moa scope is 4.18 divided by 4 = 1.047 inch so you would adjust up 1 click with a ¼ moa scope. Each click of a 1/8 moa scope is .52 inch so you would adjust up 2 clicks.

Say you are 1-1/2 inch low. With ¼ moa scope you either adjust up 1 click and be ½” low or 2 clicks up and be ½” high. 3 clicks on 1/8 moa scope is 1.56” so you are right on.