A Winchester Model 21 Skeet Gun with 28-inch vent rib barrels, with WS-1 in both. That WS-2 that is normally in the left barrel is way too tight for skeet.

Likewise the two late 1930s Ithaca-made double skeet guns I have are too tightly choked for skeet. The 12-gauge No. 4E is .009" right and .016" left and the 20-gauge Lefever A-Grade is .008" right and .014" left. Savage's skeet cylinder & quarter choke used in their Fox-Sterlingworth and SP-/SPE-Grade Skeet & Upland Game Guns is better for skeet