They approach huge weights. 120 or more pounds. Scuba divers (who work on the drains at Lake Texoma) say there big enough ones that could eat a human. Food is the limiting factor....
That scuba diver story is urban legend. You hear the same thing at every big lake LOL. I hear it all the time at Biggs Island Lake in VA.
I know that they get huge. That is part of the intrigue. It was just an idea for a pet project.