In response to Biondino

Like i said, two barrels don't happen that often. It should be limited to the point where your opponents shouldn't "catch on" unless you showdown.

On a side note, if you do show down or two barrel often, you can get extremely thin value on your hands. There was one point where ISF was playing where he was three barreling so much that a reg who was usually nitty insta-called a three barrel with an overbet push on the river with TPTK jacks, AJ. ISF had QQ and took it down. You can do the same by two barreling weaker hands for thin value.

But sorry, that was a little bit of a tangent. I think you aren't realizing a few things here. First of all, most opponents, especially at these stakes, don't think in ranges or what you are representing, they just think about their own hands (I used to not think this, but i've started to realize how true this statement is by seeing some of my opponents, even regs, play). If people were really thinking, they'd realize, "Oh, this is a perfect spot to two barrel for him, i think he's probably bluffing." But i don't believe this happens at 200NL or below, usually, unless you've play tons of hands with a good opponent. So when the guy calls the 852 flop with A2, and the turn comes a K, they aren't going to call another bet.

And what you could possibly have depends on how the opponent thinks. I'm sure sometimes when i fire a 2nd barrel at that K, the opponent is thinking "damn, i caught him on the flop but he just hit that K." Other times, they just may think that since i'm betting that K i must have a pretty strong hand because it should scare me a bit. And like i said, some (most?) people only focus on their holdings and just don't think their hand is good enough to call two streets.

You also mentions what if he's calling the flop with overs. Well, if an A comes on the turn and you don't have one, it's not a good spot to two barrel because that definitely could have hit him. Although if another high card comes on the river, and he checks to you again, you can safely bluff him out, although it just depends on the player. The point is, though that if he does have high cards he most likely has an A, but a KQJ or T are likely enough not to have hit his hand that you can bet again. Obviously, sometimes these cards will improve his hand, and you just have to live with that.