All depends on your choke / gun combo. Go watch the blue collar outdoor boys shoot Federal 7/9 versus apex 7/9 side by side target same gun 50 yards. He couldn't even judge a winner they patterned so close. I have two of the same  gun he is buying, Federal #9, 7/9, 8/10 and a Carlson 575 Is deadly as it gets. Yes you can kill em with lead no problems, My first several with a 20.gauge were the old Federal shell that had the flight control wad #6 shot. I then went to Federal HVW #7 which was an amazing shell. Then on to TSS which is absolutely amazing. Some would say get you a 555 or 562 and you will get more in a 10 inch circle. No thanks I want a more open pattern for hunting as I am not trying count numbers but kill Turkeys. That is all a matter of preference just the same as the shell company. My parting advice would be if you can get your hands on it Federal or whatever and you want to shoot TSS , you better go ahead and get it!