Well I'm not sure on limit but if you are talking NL for 50 dollar buy in games I would say 200 down. Usually my swings stay around the 4 buy in range but have gone as much as 6-7. But maybe the fact that I play 4 tables at the same time has something to do with it. There has been plenty of times I go from up 4x to even and even to down 4x and back up. When I was playing just one though I dont remember the swings being so great. That was 10s of 1000s of hands ago though so I dont remember for sure. I was a lot more conservative back then too.