Here's what Brister said, based on his tests: "As a general rule, open chokes lost a higher percentage of density from shot stringing than did full choke when the loads were of soft lead shot. But when very hard shot were substituted, there was little difference in percentage of loss between open and tight chokes." ("Shotgunning: The Art and the Science," pp 285-286.) Here, of course, Brister is referring only to lead shot. His comment on steel was that it didn't look much different at 40 yards on a moving target than it did on a stationary target.
He also said that "modern" photos, by Winchester, of "ordinary hunting loads" through full choke showed a string of about 11 feet at 40 yards.
Randy, I do know LP Brezny. Played around some with the "metro" loads he developed for Federal, and the long barrel extensions. Have corresponded with Alan but never met him.
Last edited by L. Brown; 07/22/09 04:26 PM.
