Sounds like a great idea. But I have to ask...why a high comb? A shotgun which fits you well is the best answer.
Rick
Yep. There was a reason the old shotguns of yore had a lot of drop in the buttstock. They wanted meat and that meant shooting in a hurry with head up and they werent worried about a bit of kick to the shoulder.
In those times they didnt consider busting a bunch of clays and wasting shells a good day of shooting.