I didn't know that about original Bakers, but it makes sense to me. I have a Baker that I built from TRS parts, and it fits me very well. I also collect Brown Besses and have noticed that a similar situation that you talk about with them. Most originals are so straight that you go cross eyed trying to sight along the barrel, but I did build a 1742 pattern Bess from TRS parts, including their stock, and it fits quite well.