What is the correct distance at which to pattern a .410 shotgun?
What is the correct size circle to use to determine the choke percentage?
I have read that the .410 is patterned at 25 yards with a 20- inch circle around the densest part of the pattern, and I've read the distance should be 30 yards with a 25-inch circle. I've also read that you should use a 30-inch circle at 25 yards.
What is the correct method?
Thanks, Pete