Even though it doesn't come in the 'official' .308 calibre, it is a pretty good light to medium game cartridge. Swedes and Norwegians have been knocking down moose with it for years. The best part is that these rifles usually come with a really excellent barrel. For more thoughts on Mausers as the basis for scouts, see the article by Ashley Emerson on his web page. There's a cylindrical portion on barrel just forward of the chamber, intended for mounting the military pattern rear sight.
Backup sights are problematic.
Lately I've been leaning towards having the front base drilled for a simple pin type front sight, or maybe use a 3rd base, mounted directly behind the front base, drilled and tapped for an M16 front sight. Short sight radius, but out of the way. I'm thinking about using, but that'll take some cutting and filling to work. Not pretty, but very functional. The Spanish military FR-8 might be a base for such a project.