Several years ago, when I was shooting Skeet competitively, my Kolar tubes for the .410 had two levels of choke. I used 5 tenths choke for regular Skeet and 8 tenths choke for Doubles and practice.
5 tenths is also about where Briley thinks is best for Skeet.
With the 5 tenths I got consistent, strong breaks. With the 8 tenths, heavy hits were common. With Remington factory loads, smoke was often the case, even from station 4.
The .410 appears to be very sensitive as regards what shells are used and even slight differences in choke can make a significant difference.
