Not bad groups

[Deerstalker]

This may help folks.

One MOA Calculation

How to determine one MOA for any target. Note, MOA = minute of angle.

• Calculate the distance to the target.
• Convert this number to inches or centimeters for metric.
• Double this number, (Diameter of a circle).
• Use Pi, 3.14159 times the number in step 3, (Circumference of a circle is Pi x D).
• Divide this number by 21,600, (Note 21,600 = minutes in a circle, 360 degrees x 60 minutes in one degree).

This number is the one MOA in inches, or centimeters if used, for this target at the calculated distance or range. Group shots measured center to center.

Example:

• 100 yards to target.
• 100 x 3’ x 12” = 3600” to target.
• 3600” x 2 = 7200”, (Diameter of 100 yard circle in inches).
• Pi 3.14159 x 7200” = 22,619.448”, (Circumference of 100 yard circle).
• 22,619.448”/21,600 = 1.04719”, (One MOA at 100 yards in inches).

This number is usually rounded to 1” for the one MOA at 100 yards.

The one MOA = 1” is an ARC measurement and not a straight line as it is a very small section, 1” of the overall circle circumference at 100 yards.

A trivia note – one MOA on the moon is about 69.5 miles, 111.85 Kilometers! (238,900 miles, 384,472.28 Kilometers to the moon).

 

[damageINC]

Killer work!

 

[Hateful McNasty]

I got a headache at the 2ed bullet point..

I think ill stick with " well that looks about 3 clicks worth".

 

[Ranchibi]

At the range, I'm usually shooting at 100 yards with my 2.5-15x. This time it was 197 yards.

In the past I’ve hit a couple of golf balls at 200 yards, but certainly not on every try. Here are my first attempts to put groups on paper over 100 yards. I'm happy, but always looking to improve. Rifle was doing well at 100 and wind was light so I went for it.

The group in the circle target measures 1.75” CTC-just under 1 MOA and is the best. The squares in the other targets are one inch. Wind is always an issue. 27.5 grain Nielsen .2165 slug at 950 FPS.

View attachment 346301

View attachment 346302

View attachment 346303

Just FANTASTIC groups @ 197, you should be PROUD, I certainly would! I have the same Athlon Ares 2.5-15 FFP scope on my .22 RAW, very underrated scope in my humble opinion.

 

[carlos_hathcock]

Best group ever with diabolos at 100 yards measuring 1 1/16". I've had better luck over 50 yards with slugs. JSB Jumbo Monster Redesigned .22 at 25.39 grain travelling at about 950 fps. After shooting slugs you realize how pellets get pushed around in the breeze to a higher degree.

After working with the FX Impact M3 for a year and half it's not uncommon to get multiple five shot groups with a 3-5 fps spread. Sometimes there will be the odd shot but usually I can work it down to be consistent.

 

[damageINC]

Best 5 shot group of the day. I quite like shooting from a table with a bipod to a cat scratch post with a beach towel on it.

 

[Spartan]

This may help folks.

One MOA Calculation

How to determine one MOA for any target. Note, MOA = minute of angle.

• Calculate the distance to the target.
• Convert this number to inches or centimeters for metric.
• Double this number, (Diameter of a circle).
• Use Pi, 3.14159 times the number in step 3, (Circumference of a circle is Pi x D).
• Divide this number by 21,600, (Note 21,600 = minutes in a circle, 360 degrees x 60 minutes in one degree).

This number is the one MOA in inches, or centimeters if used, for this target at the calculated distance or range. Group shots measured center to center.

Example:

• 100 yards to target.
• 100 x 3’ x 12” = 3600” to target.
• 3600” x 2 = 7200”, (Diameter of 100 yard circle in inches).
• Pi 3.14159 x 7200” = 22,619.448”, (Circumference of 100 yard circle).
• 22,619.448”/21,600 = 1.04719”, (One MOA at 100 yards in inches).

This number is usually rounded to 1” for the one MOA at 100 yards.

The one MOA = 1” is an ARC measurement and not a straight line as it is a very small section, 1” of the overall circle circumference at 100 yards.

A trivia note – one MOA on the moon is about 69.5 miles, 111.85 Kilometers! (238,900 miles, 384,472.28 Kilometers to the moon).

Or just divide the distance in yards by 100.

At 20 yards 1 MOA= 0.2"
At 50 yards 1 MOA= 0.5"
At 70 yards 1 MOA= 0.7"
At 100 yards 1 MOA= 1"
At 150 yards 1 MOA= 1.5"
At 200 yards 1 MOA= 2"

Everyone can see the super easy pattern there, right?

Horse shoes, hand grenades, and MOA calculation....close enough!

 

[carlos_hathcock]

Best 5 shot group of the day. I quite like shooting from a table with a bipod to a cat scratch post with a beach towel on it.

View attachment 358382

What distance?

 

[damageINC]

What distance?

24 yds