Thread: 3 shot groups are useless!

For someone that's never shot over 400yds before,that dam good shooting.His set up must be good.

Originally Posted by Longrun

Yes I agree. A .rifle shooting a 5moa 3 shot group will very likely shoot a tighter 10 shot group than a rifle shooting a 2moa 3 shot group.

I guess you mean .5 MOA

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Originally Posted by Longrun

Yes I agree. A .rifle shooting a 5moa 3 shot group will very likely shoot a tighter 10 shot group than a rifle shooting a 2moa 3 shot group.

Which of these is the better load?

@Tentman I think, unfortunately, the thread title is a bit counterproductive, and everyone is just reading it and jumping in to respond with their thoughts to the title.


The nuanced significance of the unreliability of conclusions drawn from 3 shot groups can be found in post 19 here https://www.nzhuntingandshooting.co....cision-103608/

After reading this and related threads I'd never adjust my zero based on a 3 shot group. It would show whether I'm roughly within the known cone of fire for my rifle, or whether something had gone horribly wrong with my scope. That's all.

So not completely useless

Originally Posted by gimp

Which of these is the better load?

Attachment 286137

Attachment 286138

There's a high probability that the top one would prove to be the better load.

Originally Posted by Longrun

There's a high probability that the top one would prove to be the better load.

Same load same rifle. Need more data. Fire a 3 shot group with it and you could get either result. Not terribly informative.

Looks likely operator factors

Originally Posted by Longrun

Looks likely operator factors

Nope, just the variation you get in 3-rd groups. The operator can shoot consistent 10rd groups with a precise system, no issues there

I happy to say I have never seen anything close to that with my shooting

Originally Posted by Longrun

I happy to say I have never seen anything close to that with my shooting

Does your zero ever shift very far?

Used to wander a bit with wooden stock rifles. Now running synthetic tikkas and vx3s. No POI shift

Originally Posted by Longrun

Used to wander a bit with wooden stock rifles. Now running synthetic tikkas and vx3s. No POI shift

Show us a few targets ?

I don't have any. They go in the bin when I leave the range

Originally Posted by gimp

Same load same rifle. Need more data. Fire a 3 shot group with it and you could get either result. Not terribly informative.

Two and half squares height difference....something else changed,range,position,wind,calmness,amount of sparrows farting next paddock over.