Originally Posted by Falian
Now I know the formula for adjusting regular raises is Normal Raise + 1 BB per limper.
I hate to disagree right out of the gate, but as primarily a tourney player, I don't do this. Early in a tourney, if the BB is 30 for instance, I will make it 90 to go if I'm opening. When the blinds go up, I'm raising less to open. Say making it 240 straight if the BB is 100. IF the blinds are big in relation to the stack, my open might be for 660 with a BB of 300. (Unless I have a small stack, in which case my open is a shove). The reason I am saving chips, is to leave myself the option to fold to a shove without having priced myself in. Note that I do this with any hand I'm opening with, so anyone who is paying attention can tell that there is a chance they will get 4-bet if they try to 3-bet me off the hand.
As to the situations you described, I suppose you can bet more if you are trying to take it down right there, but I'm not looking to do that.
If I have a big hand, I want callers. Maybe not 9 of them, but that isn't likely to happen if there are two limpers and two blinds. If blinds are tiny compared to stacks, I suppose I will add chips to chase out a couple of callers, and try to limit the field to one or two. Big hands don't come around that often, so when they do, I'd rather win a pot than a few blinds.
My real advice is not to have a formula per se, but rather a strategy that you use which varies depending on relative stack sizes, and where we are in the tourney.
Maybe your question was about cash games, though in which case, I will say IDK, and shrug my shoulders.