Sadly, barreled actions very hard to come by here in Aust. Even Rem ones..... I went looking today for something, but nothing Tikka available in .260 either. Except for the Tac A1. On my way around the shops I did find a Varmint in 6.5CM Not exactly what I was after, but since it's going in a chassis anyway I'll be using AICS mags anyhow. No thread, but longer barrel was what I wanted. Good deal money wise, so leaves me more for chassis and practice. Even with threading, I'm still a long way ahead in the money stakes over custom build or the TAC A1. So Far.We have PRS customers using T3 actions quite a bit. I think the best would be to find any T3 rifle or T3 action with a 308 bolt face and get a barrel of choice without compromises fitted. Factory barrels are mostly too light or too short or the wrong twist or the wrong way made. The barrel is mainly what makes it shoot or not.
edi
Guess I better start mining the earlier pages of this thread..........