Jim;
As I understand your post you were providing a positive means of assuring the reamer aligned with the bore. I presume you do understand I was not speaking of this, but my caveat referred to simply reaming with an unguided reamer, depending upon it to "Allign Itself". If only very light cuts are taken it will generally do a pretty good job of this when there is a parallel section to guide. In the case of the taper choke there is of course nothing to serve as a guide.
Statements made in Lefever catalogs actually said their chokes extended from "Breech to Muzzle". I suspect this was simply a poor choice of wording on the part of the writers, but many writers, without "Finding out for Themselves" have repeated over the years they were choked for the full length of their bbls. I have never seen one so made or have any knowledge of anyone else who has.
