In practical terms they're good only to about 100m, or effective range of iron sighted rifle barrel which depends on shooter's skills. You can shoot further with scoped one, but what happens if grouse flushes? That rifle barrels is not going to help you in shotgun only hunting zone. In short, they're not as versatile as folks claim them to be.
Want pro-grade DGR? Wait a while longer and buy Ruger Model 77 'Hawkeye Alaskan'.
Those Gery complications look good next to Christmas tree decorated with those hand-painted German ornaments. Cukoo clock completes that ensamble nicely, you will not get an argument on that front from me.
I would try to find 20x20/.30-30Win with 'Dural' frame if I really wanted one.
