I have a T3 from 2012 in 7mm rem mag that it fits and a new T3x I bought last year in 30-06, I can't see where Tikka made actions of different sizes, so any stock variations I've seen were to accommodate barrel thickness, if you message me a picture of the action out of the stock and measure the screw spacing I should be able to verify if it fits
The factory stock was about a half pound lighter, I'd have to pull the gun apart to weigh it though