Last year I spent considerable time with 3 different Remington 20 g turkey guns, 2 short barreled and one long.. I had a variety of chokes: SSX 550, Pure Gold Tempest 555 and 570, Undertaker 572, Pure Gold ported 555, Angle Port 575, Rem Super Full 570.. Contrary to popular belief the more and more I choked these guns with the Federal Heavyweight 7s the denser the patterns became.. I have a theory as to why the tight constriction and straight rifling works, but that is a different discussion.
The weather when I shot last year was 32 degrees.. My personal gun with the SSX 550 and Fed HW 7s had a high target 178 and the other 4 fell in the 140-150 range, which i consider perfect for this load containing 327 pellets..
So after having done the testing last year, I decided to check POI yesterday in beautiful 55 degree temps.. I taped off 40 yards and sent one down range.. I knew it was a very good pattern but I did not know it was this good, (226).. I had the girlfriend re count and she come up with 222.. I than re taped the range to ensure it was not short..
This may never be repeatable I may have gotten a hot shell who knows.. But Undoubtedly the tightest pattern I have seen in the 20 with factory ammo.. 226/327+ 69.1 % in the 10 ring.. This is much too tight for my liking and I hope it was a fluke.. With that being said a good friend of mine and probably the most knowledgeable person I know with 20g turkey guns ran the same combo the other day and had a high target of 212..