Apparently Winchester didn't agree with Mr. Hoggson about the ability to break targets at 20 yards with a cylinder bore .410. During the production of the 101 O/U, Winchester changed from 0.005" constriction for skeet chokes in the .410 to cylinder bore (they did the same for 12, 20 and 28 gauges too). At skeet station 4, the target never gets closer to the shooter than 21 yards, and people still managed to shoot decent scores with the cylinder chokes. I personally prefer 0.007" of choke for my .410 skeet guns, but Winchester didn't ask me.
