I bought an older Savage Mdl 24 (combo 222 Rem/20 gauge) last year, fully intending to re-chamber the 222 into .223 (mostly since I already have a couple of those). It's an easy job....just ream it out from 1.700"/43.2mm to 1.76"/45mm.
But even with open sights, the .222 barrel is spooky accurate, and since the barrel has 1-14" twist, I'd probably be restricted to 35-50 gr. bullets anyway. So I bought a set of Lee triple-deuce dies, a couple of hundred brass, and, with the plethora of 35-50 gr. bullets I already have for my .223s, I'm set (incidentally, despite the Obama-panic in the US, one can still buy all the 222 brass one needs at Midway and Cabela's). I've not fired any 35 gr. bullets yet, but 45 & 50 gr. bullets will group as well as my eyes and buckhorn sights will allow. My best is .85" @ 50 yds.
Don't know if you're looking for a combo gun, but if you can find one, the Mdl 24 is an idea. Yeah, it's pretty crude when compared to those fine German drillings, putting a scope on it sort of negates the use of the shotgun, but it's been a throw-it-behind-the-pickup-seat-in-case-you-see-a-varmint-or-pheasant gun for several generations of rural Americans.
Having said that.....I'd get that way-cool CZ in the Mannlicher stock in a heartbeat. I don't like that Euro-droop stock......but, hey, you're in Europe.....