Hey, fellow PA guy, I'm right across the river from you - Dauphin County - small world!
I have 3 of said weapons, but have only got chance to run 1 much so far. I have a Tikka (222/12 - 2 3/4"), a Armsport (222/12 - 3" - made by Mirochi in Italy - sp?) and a Savage (222/20). The Tikka is the one I've used so far and it was doing about 3/4" 100yd. groups w/ factory Remingtons. The shotgun bbl. seemed to be off a bit, but I think it was just major bench flinching on my part in retesting and hindsite . The other 2 I plan on playing w/ a bit till fall here soon. The Tikka is the ugliest but works great, and has a nice trigger and side bbl. selector set-up, the Savage is the heaviest - weight and trigger, and the Armsport is the prettiest w/ double triggers to boot - instant selection! The Savages are reputed to have heavy gritty triggers that only clean up so well, and poor scope mounting systems. Both of the European arms I have have dovetailed mounts integral to the receiver and I haven't got to test the Armsport, but the Tikka has held up well so far. You'll need European style mounts for them - mounts from CZ or Tikka or Millet may work - you'll need to do a bit of measuring.
Scopes - I'd say low power, large FOV, shotgun scopes are recommended - normal rifle scopes may not be up to holding the reticle together with a shotgun recoil going on. Here in PA low power is all you're gonna need to the 300 yards or so we may get on a varmint, and under 100 is much more probable. Hard to find shotgun scopes w/ less than heavy reticles tho - some calls to customer service in the various scope manufacturer's should be real helpful tho. Good quality solid and steel mounting systems are the order of the day as far as withstanding recoil is concerned too.
Valmet - excellent quality, but pricey from what Ive heard, and for even more money, you can get various bbl. combo's too.
Hope this helps some. Good luck. Maybe we can hook up for some calling this winter!