As well as Savage's Skeet Cylinder for the right barrels of their A.H. Fox Skeet & Upland Game Guns my Remington Sportsman and Model 31 guns with
SKEET barrels have a similar choke to the WS 1.
Walter Snyder provided me with this Ithaca drawing for Skeet chokes, but neither of my Ithaca made skeet guns are choked like this --
Choke For Skeet Gun.jpg
but I wish they were. My 12-gauge NID No. 4E has .009" and .016" with normal tapers and my Lefever A-Grade 20-gauge .008" and .014". They are choke stamped on the barrel flats S & S.