I think I annealed the cases after each 10 firings. 

By neck size, I mean that I screw the die in until it is about .1" above the shell holder.  I lube the case (trimmed), leaving a small dab of lube at the jucture of the shoulder & neck.  I then size the case, progressively screwing the die in until the dab of lube shows signs of being squeezed.  I then clean the case & chamber it.  If the case shows any resistance at all when the bolt is closed, I turn in the sizer die a half turn (a 7/8" x 14 tpi thread advances .07" per turn so a half turn is .035") and check again until the bolt closes with no resistence.  I then lock the die in place.  A die so adjusted does not set the shoulder back but completely sizes the neck - as long as the case is always shot in the same rifle. 

Another rifle may require a different adjustment.  When doing this for a Garand & M1903, I adjust the die for the ahortest chamber; the case should will show some expansion on the longest chamber.