Wiley I did roll hard though and survived the head-on albeit I started pouring smoke from the P47M.
And that's going to happen every once in a while. Guys with good gunnery will sometimes anticipate right and tag you. If that happens and the fight continues, make sure you don't evade the same way again on a guy like that, or he'll probably really nail you the second time.
I had forgotten about the situations Bozon mentioned where you're low E and you pull into each other close in because usually in those situations by the time you're head on in a turnfight, you both have nowhere to go. Usually when that happens to me, I am out of E and that is about the only spot I can be without stalling out.
For me, I can usually see them developing for 2-3 seconds before either of us have the shot. At that point I just try to change my vector as much as I can to get off his center line. Usually with rudder going low if I'm really at the edge, but I'll go high if I have the E to do so. Whatever I can do to slip his guns. Sometimes relaxing the turn so you go out a bit wider can help if you're close enough that he's not going to get a good snapshot and you can get below his nose, but it's risky particularly against cannon birds.
Wiley.