I agree with Shannon. You never know how it will pattern until you shoot it. Depending on the dimensions of your barrel, it may or may not be a candidate for threading. I will say this though, I sent a barrel off for threading to Mike Orlen 3 weeks ago and had it back in 6 days. Cost me $70 total and his work is fantastic. Don't bother calling or emailing him. Just box it up, send it to him with a note of what you want done, and 2 money orders. One for $15 shipping cost and one for $55 to cover the barrel threading. He will measure the barrel and decide if it can be threaded. If so, he threads it and sends it back. If not, he sends it back with your $55. Good luck!