I do like the look of that rifle. I don't know the maker.

7x65R can do most things a .30-06 or .270 can do. Depends on what load(s) the DR regulates with. Anything in North America can be hunted with it. A 175 gr projectile in 7mm/.284. or if they work something lighter.

A set of shotgun barrels makes a DR more versatile. Given limitations the rifle's stock may have. Won't know until one shoots it. And if it fits anyway ...

Often a set of additional shotgun barrels is not cheap.

I like rifles and guns with hammers.

PS I have heard of SIACE in the past. Will have to refamiliarise.