MOA? What's the criteria?

[Brianma65]

What's the accepted amount of groups, and shots per group, to get a rifles MOA?

 

[mikethebike]

Well lots of people differ but for me 5 shot groups, a minimum of 4 groups shot on the same day on the same rifle by the same shooter using the same optics on the same ammo and letting the barrel cool down between each group is a good measure of the accuracy of the rifle on that ammo, but thats pretty strict.

 

[Alpheus]

IMO a 5 shot group is the minimum. Some guys insist on 10 rounds.

 

[Brianma65]

Well lots of people differ but for me 5 shot groups, a minimum of 4 groups shot on the same day on the same rifle by the same shooter using the same optics on the same ammo and letting the barrel cool down between each group is a good measure of the accuracy of the rifle on that ammo, but thats pretty strict.

I've read that mil rifles are tested with 30 rnd groups, how does a rifle manufacturer test there rifles? To be able to claim they're 1 moa rifles.

 

[Brianma65]

IMO a 5 shot group is the minimum. Some guys insist on 10 rounds.

ok , if 4 groups are under 1 moa and the fifth group is over 1 moa , what moa would that be considered?

 

[hawk-i]

For a hunting rifle it is a 3 shot group....manufactures test targets are 3 shots only.

 

[Brian46]

what if I shoot 10 targets ten different days (1 round each) with varying weather and wind and they are all within an inch of the bull?

not only does that show accuracy of the shooter and rifle but the ability to adapt to different shooting conditions on every day.

 

[Brianma65]

For a hunting rifle it is a 3 shot group....manufactures test targets are 3 shots only.

do they only do one group? Do they try diff ammo?

 

[Juster]

What's the accepted amount of groups, and shots per group, to get a rifles MOA?

There isn't one. MOA is an angle, groups are about statistical probability. You could say that you shoot a 5-shot sub-moa group 90% of the time, for example.

 

[Brianma65]

what if I shoot 10 targets ten different days (1 round each) with varying weather and wind and they are all within an inch of the bull?

not only does that show accuracy of the shooter and rifle but the ability to adapt to different shooting conditions on every day.

Yes, but what I'm trying to determine is , how many groups/ rnds,does colt, kac, etc fire out of there rifles , to be able to claim , that it's a 1 moa rifle?

 

[tiriaq]

If all its groups are a minute or less, all the time, regardless of the number of shots fired in each group, then one could say it is a minute of angle rifle.

 

[Brianma65]

There isn't one. MOA is an angle, groups are about statistical probability. You could say that you shoot a 5-shot sub-moa group 90% of the time, for example.

I get that, so if you shoot 5 groups, and 4 is under 1 moa and 1 is over 1 moa. Can you state that it's a 1 moa rifle?

 

[tiriaq]

I get that, so if you shoot 5 groups, and 4 is under 1 moa and 1 is over 1 moa. Can you state that it's a 1 moa rifle?

How could it be?
It is a minute of angle rifle some of the time.

 

[Brianma65]

If all its groups are a minute or less, all the time, regardless of the number of shots fired in each group, then one could say it is a minute of angle rifle.

ok , that makes sense, but there must be a standard , colt, kac , etc must have a test standard. 3 groups/3 shots , for example.

 

[Brian46]

Yes, but what I'm trying to determine is , how many groups/ rnds,does colt, kac, etc fire out of there rifles , to be able to claim , that it's a 1 moa rifle?

each manufacturer sets their own standards i believe. It is like the EPA advertised milage for a car/truck. they post the best possible that you can get in perfect conditions, not what the regular user gets.

I do not beleive there is a regulatory board like the EPA for the advertised accuracy on a rifle.

 

[Brianma65]

How could it be?
It is a minute of angle rifle some of the time.

thought maybe you averaged it out. So whatever your highest measurement is, then that what your gun shoots.

 

[mikethebike]

with me shooting it my colt m4 is about 2.5 moa now on 5.56 federal factory, its good enough for me and about what i should expect from it. 1.3 moa on expensive hornady ammo.
My tavor is 4 moa on 5.56 federal factory, again what I expect from it. 1.7 moa on expensive hornady ammo. See how it varries?

 

[Jarvy]

I get that, so if you shoot 5 groups, and 4 is under 1 moa and 1 is over 1 moa. Can you state that it's a 1 moa rifle?

I'm guessing you won't get a straight answer because everyone likes to fudge their numbers a bit (Including me!) and thus everyone has different standards and criteria. I personally never make any claims like that, and instead just post photos of the targets with measurements, and let everyone else decide.

Example: This is from my NEA Lower/Norinco 20" A1 upper

You can probably get away with saying something like "1 MOA on a good day" but pictures speak louder than words.

 

[Brianma65]

It's easier to get better moa results with less rnds fired per group. 3 , 3 rnd groups would probably be better than 5 , 5 rnd groups , and so on?

 

[Brian46]

It's easier to get better moa results with less rnds fired per group. 3 , 3 rnd groups would probably be better than 5 , 5 rnd groups , and so on?

depends, some guys have their rifle locked in a sled removing the shooter from doing anything more than lining up the sights that could cause an error