Got my Bravo installed on my Tikka yesterday. The front action screw they sent with the chassis was slightly too large in diameter and wouldn't thread in to the action. I called KRG about it and they were very helpful, but I ended up stopping by Fastenal on the way home from work and got what I needed instead of waiting for one to ship. IDK if there was a change to the Tikka actions (I bought mine around 2007) somewhere along the way.
I'm very happy with the chassis though, its very comfortable and pretty easy to adjust. I am looking forward to the Tikka specific cheekpiece as the current one has enough elevation to work, but I'd prefer to get another 1/4" more height out of it for it to be perfect. The current one hits the cocking piece at that height.