I have the 28 inch model. I hunt with a sumtoy 562-5. It puts up 150+ type numbers with federal 7s. The 5 after the 562 designates how many stripping rings are inside the choke. He also makes a 3 ring that is recommended for lead, hevi, and tss. The 5 ring is made for federal Heavyweights.
I have also shot the following chokes and they yield these numbers out of my rig. Ive shot 20+ boxes of federal shells to compile my data.
Swarm 555......80 to 90 at 40
Puregold 570( ported)......110 type numbers
Puregold 570 tempest.......100 to 110 numbers with 7s, 120+ numbers with federal heavyweight 6s.
Puregold 555 tempest.......85 to 100 type numbers
Hs strutt.....80 to 90 type numbers
Truglo ssx.........140+ with 7s, 115 to 125 with federal 6s
Sumtoy 562-5.......150+ with 7s, 100 to 120 with 6s