If a gun crossfires at 15 yards, expect double the error at 30.
Exactly. It would seem at first glance that this would make it hopeless to hit anything at 30 yds. or beyond, however, keep in mind that the pattern enlarges as the range increases, too. This is the only reason some guns will hit anything at longer distances, and also the reason some people who have never patterned their guns prefer open chokes. Big patterns make up for sorry workmanship in regulation, to a degree. But, it's a poor, poor tradeoff.
Some people are so handicapped by poorly regulated doubles that they would be amazed at how much their hit ratio would improve with a properly regulated gun. Same goes for people who shoot single barrel guns, but have never shot them to see if POA and POI are coincidental.
SRH
