Quick update... I found the Walther Century too heavy for me, (4.23kg, and 4.94kg when scoped) so I part exchanged it for a synthetic stock Walther Terrus (3.3kg) its a really nice little rifle to shoot, I removed the open sights and fitted a Nikko 4x40 to keep the weight down.

Terrus seems to like RWS Superdomes and RWS Hobby's.