That's not about specific regular, but about a common situation in general.
I hate this random 3bet/4bet dynamics in Steal Spots and I finally want to work out.
There'll be a bunch of questions 
At first I thought to get it all in one thread - but that's to many information.
So, let's try to work out coherently in each situation.
We're playing steal raise and "Reg" OOP or IP 3bet Us.
Preflop: Hero is BTN or SB with X X
3 folds, Hero raises to 2 BB, SB or BB "Reg" 3bets 7-9 BB
Enemy: 21/17
For this situation we'll build our decision on the next stats:
Resteal vs BU Steal / Fold Resteal vs 4bet / Call 4bet / 5bet
Cbet Flop 3bet pot / Cbet Turn 3bet pot / Cbet/Fold 3bet pot
Opponent has:
- a) Fold Resteal vs 4bet > 55-60%.
(If we'll play 2x 4bet - we'll bet 12 - 16 BB for pot 21,5 - 28 BB = nearly 55% FQ)
Easy situation. We will play 4bet bluffs.
- b) Cbet/fold 3bet pot OOP > 45-50%
We will play some bluff and semibluff raises on flop.
- c) Low Cbets in 3bet Pot ( Cbet Flop < 55%, Cbet Turn < 50%)
We will play more calls IP with value hands like AJ, AT, KQo, KJs - depending on his Resteal Range.
In this spot we can win cheap pots postflop with medium value hands and win some pots with floats or another bluffs/semibluffs.
- d) Wide 5bet range. Something like Resteal 16% and 5bet 30%. Then 5bet Range = 0,3 * 16% = 4,8%.
In this spot we will expand our 4bet/Call range (AQo, AJs, 99 and etc) - depending on 5bet Range
There's 1st problem - very often actually we haven't enough samples for determining opponents 5bet range.
Q1) Your 4bet/call range here vs different Resteal 3bet Ranges? Why?
Your Range when you're in BU, and when you're in SB? What's difference?
Now the hardest one:
- e) High 3bet Resteal, Low folds vs 4bet, High Contbets in 3bet pots.
Looks like: 3bet Resteal - 10-16%, Fold vs 4bet - 25-45%, Cbet Flop 3bet Pot: 60-80%; Cbet Turn 3bet Pot: 60-80%; Cbet/Fold 3bet pot < 45% Often Low mining distance - 1k - 5k hands
Sometimes we see this stat vs loose regs and often, when we just haven't enough samples.
So, opponent often resteal you, don't fold vs 4bets (with tend to loose 5bets or calls), everytime contbets postflop.
That's really annoying, isn't it?
Q2) What do you do in this situation? Especially when you haven't enough hands and samples vs opp.
Q3) Any additions on this topic?
P.s. if there's some mistakes in English, then if you've rights - edit this post plz
