I should start off by stating that I strongly agree with Jim in that one can do with one's possessions whatever one wants.
Having clarified that -"butchering" one's Purdey or one's Crescent is only up to oneself- I would like opinions from the experts as to the following method:
Long wooden dowel with a cut at one end where you roll a piece of oiled sand paper (300 grit) and put some paper under it until it fits snugly when you insert it, from the chamber, into the choke area. With the dowel in an electric drill and while wrapping the end of the barrel with a wet cloth to "refrigerate" you go at it with care, adding pieces of paper under the lubricated abrasive.
Comments will be appreciated.
JC
