Bought a box of Federal Shortys in #4 buckshot for my daughter to try out in an old "Joe Biden Special" . Years ago I cut down on old Stevens 12 to 24" and tested it. Still good barrel regulation so I went to 22" and patterned it again. This time they were just starting to spread apart so I stopped and had one of those red plastic sights like Ithica used put on. I was hoping to get down to about 19". I'm still tempted to try it. I also thinned the pistol grip to my liking and worked on the comb also. I never did get it as light and fast as I was hoping for.