k80
USA dealer asking price for a Grand European Winnie 30-06 in as new condition is usually around US$4000 and the Beretta about US$5500 if it has factory scope mounts.
If you have the bucks, the Beretta is most likely the better proposition.
The Winchester Grand European is a very well made rifle but sadly they were NOT factory regulated and many/most do not shoot their two barrel groups together.
The barrels were assembled to a pre determined specification in a bid to dodge regulation and of course it didn't work.
They can be regulated but this adds to the original price.

The Beretta would have been factory regulated and should shoot ok but before buying, it would be a good idea to shoot it and see what the grouping is like.(if possible)