The number of shots in a group affects the size: September 7, 2008

When the only person you have to please is yourself, shoot whatever number of shots you want, but a test report with groups of less than five shots is suspect, to say the least. I have recently shot some 10-shot groups at 50 yards with a Ruger 10/22 rifle I’m testing. Eight of the 10 shots went into a group measuring 1-1/2″, but shots nine and 10 opened up that group to 8-1/2″! That’s an extreme example of what I’m illustrating, but I never got a 10-shot group of less than 2-1/2″ with that ammunition in that rifle, so what does that say about the 1-1/2″ eight-shot group?…Dirt E. Harry

The number of shots in a group affects the size: September 4, 2008

On the other hand, a 10-shot group will be about 40 percent larger than a five-shot group from the same gun. Whenever the accuracy of a gun is being measured, 10-shot groups are considered the standard measurement tool, though few shooters, including yours truly, ever invest the time and effort to shoot them… Dirt E. Harry