View Single Post
Unread 01-04-2023, 08:47 PM   #11
Member
Stan Hillis
PGCA Member

Member Info
 
Join Date: Oct 2015
Posts: 2,095
Thanks: 4,143
Thanked 5,056 Times in 1,426 Posts

Default

Taken from the link I posted to Hallowell's ........

"The dimensions used in the above table are rules of thumb. Bore measurements by micrometer are useful to predict the pattern thrown by a shotgun barrel, but they remain merely a prediction. The only way to determine the actual pattern thrown by a shotgun barrel is to shoot it, by convention at 40 yards, count the percentage of pellets falling within a 30" circle placed around the visual center of the pattern (as in the right-hand column of the above chart), then do it a few more times and take an average."
Stan Hillis is offline   Reply With Quote
The Following 4 Users Say Thank You to Stan Hillis For Your Post: