I had this done to a set of damascus barrels I once owned. Nick Makinson did the work and it seemed to pattern well and kill Roosters nicely. He was limited as to the amount of choke he could add with this method, if memory serves, on this set of barrels he was able to add .012" or light mod chocking.


www.bertramandco.com ACGG Pro
Pope Leo is my war hero
[Linked Image from i.imgur.com]