Maybe someone can help me. I have a 15", T/C , 460 SS barrel that won't shoot any groups at all. Presently its topped with a Redfield 3 ring mount and Bushnell 2-7 trophey scope. I've had a 2X Burris on it also, same results. I put both scopes on a different handgun, (.44 SRH ) they shot great. The barrel seems rough on the inside, almost like lath marks. I have 3 other barrels, none of which have such marks. I had the same results with 454 ammo. Disgusted, I called Thompson Center, they were very courtious, told me to send it to them, less scopes, etc. I recieved my barrel back a couple of weeks later with a note....shot 1 1/2 groups at 100 yds with Corbon ammo. Thats all it said. After pricing Corbon ammo, presently at 55 to 60 bucks for 20....I'm blue collar, can't afford that ! Has anyone else had problems with this 460 T/C barrel ? Any help would be appreciated.