I've adjusted the trigger on my Sako 85 (7mm-08).
It's easy to do. Just a single allen wrench.
You do need to take off the bottom metal (trigger guard) which is pretty self explanitory.
I had a bit of a issue when I did mine. I figured I'd take the whole barreled action out of the stock. Took out all the bolts, took the stock off and made the adjustments.
Figured I'd just hold the barreled action into the stock while I shouldered the rifle and tested out the new trigger pull.
The barreled action fell out of the tupperware stock and landed on my bench straight on the trigger (minus the trigger guard).
Scope was okay, no scratches on the rifle but the trigger broke clean into 2 pieces.
Oops. My bad
After getting past the urge to smash the whole rifle I figured I just gave myself a good reason to get a new Timney or Jewel trigger.
In the end, couldnt find an after market trigger for the rifle so I sent it back to Stoeger in Ontario to have a replacement installed.
They wouldnt sell me a trigger or the parts to replace it.
The whole repair cost me only the price of shipping my rifle out to them (approx $50).
I dont have enough good things to say about the whole experience. It could have turned out very badly for me but it didnt.
I wont hesitate to buy another Sako in the future.