Marlin Forums banner

1 - 20 of 27 Posts

·
Banned
Joined
·
7,853 Posts
Discussion Starter · #1 ·
Whats the prober method used for measuring groups inside diameter or center to center?I guess its time to google :D
 

·
Banned
Joined
·
7,853 Posts
Discussion Starter · #3 ·
Thats what i was thinking Axxe
 

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

·
Registered
Joined
·
226 Posts
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)
 

·
Banned
Joined
·
7,853 Posts
Discussion Starter · #8 · (Edited)
I have been measuring them from the edge :eek:
 

·
Banned
Joined
·
1,241 Posts
if someone could post some pictures and measure the group sizes and explain how it was done would be helpful to many of us.
 

·
Banned
Joined
·
7,853 Posts
Discussion Starter · #12 ·
There has always been a controversy on the correct way.
 

·
Registered
Joined
·
50 Posts
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
 

·
Registered
Joined
·
43 Posts
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.
 

·
Banned
Joined
·
7,853 Posts
Discussion Starter · #17 ·
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.�
 

·
Banned
Joined
·
7,853 Posts
Discussion Starter · #18 ·
ammosmith strikes again :d
 
1 - 20 of 27 Posts
Top