1/2 MOA at 500 meters

[b72471]

I see reference to this all the time on here. So what group size represents 1/2 MOA at 500 meters??
Thanks.

 

[J996]

Moa equates to 1.047" at 100 yards. So 1/2 moa at 500 yards is a shot group of 2.61"

 

[njlondon]

1 MOA = 1 inch at 100 yards.
1 MOA =5 inches at 500 yards.

½ MOA at 500 yards is 2.5 inches group size, center to center.

500 meters is 546.8 yards.

½ MOA would be 2.73 inches group size.

 

[njlondon]

1 MOA = 1 inch at 100 yards.
1 MOA =5 inches at 500 yards.

½ MOA at 500 yards is 2.5 inches group size, center to center.

500 meters is 546.8 yards.

½ MOA would be 2.73 inches group size.

I used the common estimate of 1 MOA = 1 inch at 100.
J996 above is correct.
Do the math with 1.047.

 

[b72471]

OK; thanks. However that is a theoretical (perfect) result. When one considers all other factors wind, lighting (mirage) etc, is it conceivable to say, my gun shoots 1/2 MOA at 500 meters.
Thanks again

 

[njlondon]

Wind, lighting (mirage) etc. has nothing to do with how you measure a group size. That's math.
Or how you state group size.
Wind, lighting (mirage) etc. has has everything to do with how you achieve those groups at distance.

 

[TargetNorth]

Yeah, you just measure the group... if it's less then 2.73 " it's 1/2 moa or less. My 6br has shot a few 1/2 moa 5 shot groups at 500M. Not consistently but man what a feeling when it does.