On the piece of private I grew up hunting, 6s are pretty common. Here's some of the bigger ones over the years:
My dad killed this one several years ago. Not a giant rack but huge body
Never saw these funky ones in person
This guy never showed up during season. I would assume at one point he was more than a half racked 4 but I'm going to cheat for the purpose of being able to include him here lol
This one may have been a 7 but I never got a clear enough pic to see if he has a split at the front of that left beam
This guy haunted me. Planned for him all preseason. His rack never took off like I thought it would, and he broke off the front of his left beam, but he was just a cool deer. Hunted him the opening weekend of the season and saw him come in from the corn 30 mins before last light. He craaawwwled to me at a glacial pace and didn't get in range until it was too dark to see my pins on him. I had to sit in my saddle and listen to him walk directly underneath me before he headed past me. Never saw him again but did kill his buddy a few weeks later.
And last, but not least, one of the coolest and angriest deer I've ever seen on cam. He was on public and was killed last year before I ever got eyes on him.