IMO - If you feel pretty good about your pattern at 50 yds... Then I'd say you're good to go. Some want to go 60+ and that is totally you to your personal taste/opinion. Of course the thrill is in fooling them and calling them in close - but we all know there's times when he won't come closer so you need to know what your gun can do. If it were me - I'd call it a day!
Kim