I have the Winchester 1300 Black Shadow cantilever deer gun with a 22" barrel and have used it for 2 years now. I wasn"t very successful in accuracy with the Winchesters suprems sabots but this year I decided to try the Remington premium copper solid and was quite impressed. I was getting approx. 1-1/2" groups at 50 yards.
Now I"m not sure what type of groups I was getting at 100 yards because I hadn"t set up a target but I was able to hit a 6" square steel plate 2 out of 3 times with my last 3 shells at 100 yards. I did get 2 deer this year with my shotgun and they were both under 50 yards when I pulled the trigger.