I agree with most that it is fairly easy to adapt to various lops my guns range from 13.75 to 15 without any real problem just a little practice. I have game shot with all of them and the 13.75 and 15 were 2 that I had most luck with. I agree that in MOST cases a little pitch change does not effect me much but I do have a 16 ga Francotte o/u that had severe pitch that caused the gun to shoot high I retrimmed (about 1/2" at the toe)the stock to reduce pitch, it then shot about 6" lower and basically 60/40 on the paterning board.
The one thing I can't seem to adjust to is a heavy trigger pull over 6 lbs is murder on me I end up flinching.
Jeff G.