Return vs Limit

[geek]

As a newbie, I'm trying to characterize my BB/hr rate at 0.5/1 and 1/2 HE internet ring games. When I move up to the larger limit game, my rate in terms of BB/hr drops down to about 60% of the lower limit rate. Unfortunatly my sample size is way too small to conclude anything.

Do any of you have data or rules-of-thumb you are willing to share, indicating the expected drop off in BB/hr for each 2x increase in limit?

Thank you,
geek