That is very interesting, Hugh. Did you determine the ratio by trial and error, or was it something you learned elsewhere? Many of the old guns, which were designed to shoot lead only, had tapered chokes with no parallel section. I have wondered if parallel profiles in chokes came about as a result of trial and error, or simply a lack of the proper tapered reamers to get the job done that way.

May God bless America and those who defend her.