Here's an outfit that does a lot of work on the SP-101 Ruger. I would call them and see what they would say. It's not cheap but they do excellent work. Good luck.
I need to get it re-finished. I would also like a longer ported barrel and a action job. Where should I send it?
why do you want to port it? Security six is an excelent .357 very controlable.
"Patriotism is supporting your country all the time, and your government when it deserves it." -Mark Twain