The biggest one I ever handled was at a reptile show when I was a kid. I was one of 10 kids who got to handle a 20' burm. I got the head. It scared the crap out of me at the time, but I've been addicted to snakes since then.
In recent times, the biggest I've handled was the mother of my little BCC. She's 12' long with a good girth. Total sweetheart though.
- Ken LePage