Received my Timney 2-stage yesterday and got it installed.
Don't have much time on it yet, but my initial impressions are very good. First stage is extremely smooth with maybe .150" of travel, with a nice hard stop at the second stage. The second stage break is very crisp. Out of the box sear engagement and overtravel adjustment was very good. Right now I have it adjusted with a 14oz first stage and a 2lb 8oz break.
Other good news-- it's an easy drop in for a Sako Quad, so Quad owners can finally have a 2 stage trigger if they want!
Some observations though...
The Timney doesn't have a bolt interlock when the safety is on like the stock Tikka trigger. While the stock Tikka trigger locks the bolt with the safety on, with the Timney you can manipulate the bolt with the safety on. This may be a benefit or drawback depending on your point of view.
Timney says you can go up to 16oz on the first stage, but I could only get up to 14.5 oz before the first stage spring would coil bind and not allow the trigger to move rearward enough to break. What I did is hold the trigger in the fired position, gently screwed in the first stage weight screw until I could feel the trigger pressing forward against my finger as the first stage spring was fully collapsed, then backed it off about 3/8 of a turn to avoid coil bind. That produced a maximum 14.5oz first stage weight. This will vary depending on how you have the overtravel screw adjusted. If you like some overtravel in your trigger after the break (like an AI) then you'll need to back the first stage screw off more to allow that additional travel without running into coil bind, which means your maximum first stage weight will be lower.
So far, quite happy with it. Now I'm trying to decide if I want to order 2 more for my Quads or wait until the KRG trigger comes out to try one of those and then decide which one to buy 3 of.