Outside 1.5 inch
Cen -Cen 1.125
String 2.5
Lee

Cayugad, Would you mind doing that Paintshop thing with another target? Make it a 5/8" group. I've never seenone with .50 holes. Might be interesting.

The easiest way I have found to measure groups is to take the two farthest apart holes and measure from the inside of one hole to the outside of the other. That will give you a center to center measurement without having to guess where the center is or have to measure outside to outside and subtract the bullet dia. Gives exact center to center with no extra steps.

Mayguy
Good point
that would be the exact same as center to center and the same as outside edges minus bullet diameter. and takes out the guessing of the center or any math.

Anyone know what size this group in blue is?

9/16"

5/8" ??

About .65 by eyeball.[center to center]Lee

I would call it an "Oh My God!" size. (5/8")

thats about right. expect you'd have to take the 2 shots on the left and move them over the right side. My first shot always shoot a tad higher and a little more to the left.