brad_vanderband1
The first thing I would try would be some JB Bore Paste, and from there, if necessary more a bore paste with a very fine grit. But remembering what you take off you can not replace...
Do some searching for "barrel lapping" you will a multiple ideas how to do it. I did fire lap a barrel on a Austin & Halleck several years ago and it worked great. All I did was shoot some lead conicals out of the barrel using a bore paste as the lubricant.
One other thought - your pitting probably will not effect the performance of the rifle as long as you clean very each time and lub the barrel...
Last thought which is probably the best... call TC tech people tell them what you have going on... they will probably have you send the gun in and they will do what is the best.. yep on a newer gun and since it is a TC that is where I would start first... no doubt...