[FOUR4D4]

Whats the prober method used for measuring groups inside diameter or center to center?I guess its time to google

 

[axxe55]

Whats the prober method used for measuring groups inside diameter or center to center?I guess its time to google

Four, i think it's center to center. but not 100% sure.

 

[FOUR4D4]

Thats what i was thinking Axxe

 

[Falcon]

I was always told outside shots, center to center across the group. May be wrong but thats what I do.

 

[squirrelhunter]

Center to center's what I've always heard.

 

[28Shooter]

I was always taught that it was center-to-center.

 

[tahoe2]

all of the above are correct; center to center of the farthest spread.
usually I get three to four tight and then they start to open up from a heated barrel,
that's because I get impatient waiting for the barrel to cool down.
I usually shoot a full magazine, whatever that is (3,4,or 5 shots), same with pistols
or revolvers(full cylinder or magazine)

 

[FOUR4D4]

I have been measuring them from the edge

 

[duster066]

I have been measuring them from the edge

You shoot better than you thought!

 

[squirrelhunter]

You shoot better than you thought!

That depends on if it's "inner" or "outer" edge .

 

[axxe55]

if someone could post some pictures and measure the group sizes and explain how it was done would be helpful to many of us.

 

[FOUR4D4]

There has always been a controversy on the correct way.

 

[Fomdiddle]

If you will measure outside to outside of the furthest shots then subtract the caliber it should give you the correct center to center group size. Fom

 

[CallMaker]

Outside measurement of the furthest shots less bullet diameter equals group size center to center.

 

[sgtcowboyusmc]

I just measure from the approximate center of the two farthest shots. I have never had to, on my own shooting, measure down so close that I needed to be more accurate than that.

 

[SHOOTER13]

[ame]http://www.youtube.com/watch?v=_vuw9iHzgIY[/ame]

http://www.gun-tests.com/performance/feb96how.html

http://shootingsoftware.com/measure.htm

http://voices.yahoo.com/how-measure-bullet-shot-group-accuracy-thousandth-8537103.html

http://www.discountgunsupplies.com/page/howtomeasuregroupsize

 

[FOUR4D4]

How to Measure Group Size.

The size of the group is all that counts, there are no scoring rings on the target. Using a micrometer, the group size is measured at it`s two farthest points (largest outside diameter). The diameter of the bullet (in thousandths of an inch) is subtracted from that measurement to produce the true group size. Shooters fire from sturdy benches with the rifle supported by a rest and may have as long as 15 minutes to fire their group.�

 

[FOUR4D4]

ammosmith strikes again :d

 

[SWO1]

Thats how ya do it....take a look at the WORLD RECORD 100 YD GROUP..

http://bulletin.accurateshooter.com...possible-new-unlimited-100-yard-nbrsa-record/

 

[carlk418]

15 minutes to fire a group? If I took that long, my shooting buddies would fall asleep waiting for me to finish...