Why I like 3 shot groups over 5.

stubblejumper said:
You also have better odds of fluking off a bragging sized group.:p
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Reminds me of my dad this summer with his older-than-jesus 30-06 that struggles to shoot 4" groups off a bench with handloads. but is an awesome bush gun.

4 rounds in under an inch at 100yds off-hand. We figured he just missed the target, but it was 1 ragged hole. :sniper: talk about getting all the right random variables together for that one
 
LongDraw said:
3 shot groups are always smaller than 5 shot groups...
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Really!?! I guess I should have taken a measurement after 3,then. Mighta set some kinda record.....;)

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"I've found with my skinny barrel magnums, that firing a single shot from a cold bore, and always hitting the 1 moa bullseye, gives me confidence that it will perform when needed. It doesn't take much heat to mess with some of those light barrels, and 5 shots from a magnum rifle generates a lot of heat. And then you start screwing around with the scope adjustments on a hot barrel and only serve to mess up the cold bore point of impact. "


Well said.

Those of us who shoot heavy barrel target rifles know that it takes at least 5, and 10 is better to know a rifle/load is good.

A group has to be "statistically valid". And 3 shots is not valid.

With a light barreled hunting rifle, I fire a 3 shot group, because the heat would distort the group and maybe shift the zero. I want a rifle zeroed for a cold shot, not a hot barrel.

When i think I have a good load, I fire several 3 shot groups, withthe barrel good and cold for each.

This is easy to to if there are other guns to play with while the hunter cools.

9 or 12 shots, fired 3 at a time, is "statistically valid".
 
Joe-NWT - that, sir, is some fine shooting :) I consider '5 inside a dime' to be a great benchmark of rifle, ammo, glass and shooter but '5 inside the sails' is something else ! Well done !
 
rofl
manitoba said:
You see, I am a bit of an expert in statistics. What I do is shoot a five shot group. Then, I take two "outliers" and eliminate them from consideration. I then measure the span between the remaining three holes (from the two inside edges) and round down if necessary. With this number, I calculate the accuracy potential of the rifle by multiplying by certain constants (for instance, if the day was particularly humid, I multiply my group size by 0.78, and if I have a bit of heartburn, the group size gets multiplied by .62)

Math is my friend, and all my rifles are sub MOA . . . I bet even my shotguns could be with a few more adjustments!
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Well, That is my bragging group.;) I've never repeated it with that gun. But I've gotten close when the stars are in alignment......
 
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