A few suggestions....the 24" Affinity and Ninja is exactly what I use. I use a .562 Indian Creek but really not a lot of difference in patterns as I have a Sumtoy .562 in another Franchi. I get 280-300 in a 10" and 160-175 in the 20" or over 90% of the pattern inside a 20" circle at 40 yards, not 30. For 30 yards, that's probably about your average pattern....
First - get you a bigger piece of paper...24"X36" or so so you can see what your entire pattern looks like. It looks to me like your pattern is to the left on the paper you used.
Second - shoot it at 40, not 30. The pattern will disperse quite a bit over the extra 10 yards and will give you a better idea of what you can expect.
Finally, my gun really likes a clean barrel as opposed to dirty. Yours may be different, but I would try me a 40 yard shot on a BIG sheet of paper with a squeaky clean barrel and see what ya get.
This is the last shell I shot to zero a red dot. Barrel was a little dirty so pattern is not as good as with a clean barrel. It's a little bit left as well, but I moved red dot after the shot.
