Was just talking to Jimmy about bluffing/barreling so thought I'd share some of those thoughts:

I think an important thing is distinguishing which boards are good to ONLY fire 1. Which are good to ONLY fire two and which are good to fire 3.

If someone calls on a AK5 rainbow, I'd say this is reasonable to just fire one. Lots of their range are Ax or Kx hands which will always call two. So if you're going to fire more than 1 barrel it better be 3. Cause their whole range is always calling two, except for fewer combos of QJ/JT.

If someone calls on J85 rainbow. I'd say this is a good board to fire two. A ton of flop calling range makes up gutters/OESD's. Hands like 9T, 67, 79, QT, 46 etc etc. All these hands will call one barrel but fold to the turn. If they call turn again, I'd shutdown cause they prob aren't folding river.

If someone calls on a T47 board, and turn comes 5. You have to decide if you're gonna go three with it or give up. A lot of hands on this board are gonna be pairs+draws which will call two but fold to river often. So similar to AK5 example, its fire once or three I'd say.

I'd say these are all factors which usually contribute to my higher than average red line. Some people only barrel with a strong semi bluff hand and give up all other hands. I tend to barrel regardless of my hand, if I strongly believe that their hand fits into one of these categories and can get a fold.