Clemson, you hit the nail on the head!
The late Jack O'Connor elaborates in his The Shotgun Book:
"Within limits, most of us can fit ourselves to a gun and do a good job of it. Over many years American shotgun manufacturers have found that a gunstock with a drop at comb of 1.625 inches, drop at heel of 2.5 inches, and length of pull of 14 inches fits the average man well enough so that he can do good shooting with it if he in turn tries to fit himself to it.
"We say average man. What do we mean? I have read that the average American male is between 5 feet 8 inches and 5 feet 9 inches tall and about 160 pounds in weight. If such a gunstock fits this lad exactly, it obviously won't fit Shorty Smith, who is 5 feet 1 inch, or Slim Jones, 6 feet 4 inches. If Shorty and Slim are exceedingly adaptable, they can fit themselves to the stock sufficiently and do credible shooting, but they'd do better if they didn't have to work so hard at it." (Note that this book was published in 1965, so the demographics for height and weight have probably both increased since).
Mr. O'Connor closes this chapter with this, "Actually, there's nothing mysterious about gun fit, and once a man has learned to shoot he's a better authority on what fits him than anyone else. A well-fitting gun doesn't make a crack shot out of a dub, a poor fit doesn't make a dub out of a slicker, but everyone does his best shooting with a gun stock that fits." To which I say, Amen!
Good luck, and good shooting!