F4U-1, -1A, -1D & -4 all guns at 350. decent for close in and for reaching out to those guys trying to extend, puts enough hits on them to make them turn for me. Now if i didn't come across so many 1 pass and extend fights i would have them at 300, it was like buzz saws. If i know I'm going to be shooting at M3's, Wirbles, AA and other ground targets i'll extend it to 375.
-1C i have all at 325, but might extend them to 350-375 if i'm going to be shooting at grounds targets