I purchased a set of Carlson's extended chokes to replace the Remington factory flush chokes that I have always used. When the chokes arrived I performed a pattern comparison between my old and new chokes using Winchester Xpert #2 steel (my usual bird load). I patterned three shots each at 25 yards with my IC flush choke and new IC Carlson's choke. Both performed similarly with the edge in pattern consistency and central density going to the new extended choke, but the advantage was slight. I patterned three shots each at 35 yards with my modified flush choke and my new modifed Carlson's choke. There was an enormous difference between the two and it started to make sense why ducks at that range haven't been crumpling for me. Very inconsistent, assymetrical patterns with the flush choke, nice, tight, efficient patterns with the extended choke. I lost my full flush choke years ago, so I have no comparison for the Carlson's full choke. At 25 yards, I need to shoot at a duck's HEAD with the full choke; impressive killing pattern at 45.
I'm very pleased with this purchase. I have no basis for comparing these chokes to the more expensive options like the strangler, patternmasters, etc. etc. but I'm having difficulty seeing how anything could exceed the Carlson's performance enough to justify three times the expense. These seem to do quite well with the cheapest steel shot I could find - Highly recommend.
This review was written in the old system and had content requirements that are different than reviews written today.