Might have had a shotgun barrel on it at some time, but doesn't look like the commercial shotgun actions that were shotguns when they left the factory.
A lot of military rifles were later sent back to be repurposed as shotguns for what Denmark and Sweden called "Forresters", their version of Game Wardens. Some were redone to rifle calibers more modern, and some to shotguns in mostly 16 ga., and 20 ga.
They're good strong actions in the heavier style like yours. In the original shotgun style they're not as strong, and should either be left as shotguns, or reworked to lighter calibers.
The detriment to this style is aesthetics, as the hammer with the safety on it isn't as pretty as a regular hammer. But that's a minor issue. I find complete Rolling Block imported military rifles often at gun shows and they sell for less than just actions alone sell for. I can often strip the barrel and stocks off them and sell actions alone for a decent profit.
I made my last Rolling Block off an $80 action from a friend.
