Well, that is absolutely the only magazine rifle I've ever seen with a cross-over stock....I'm pretty sure its the only rifle, period, that I've seen with one. I'm cross-dominant so, I normally check out any guns stocked as such, just for my own curiosity. I've never shot any of the shotguns I've observed over the years but handling and shouldering them, the concept seems to work- I don't have to close my off-hand eye.
Interesting between these two Jeffreys, one is on a mag action and the other (this one) on a standard. As mentioned, the grinding on the bottom of the standard looks as if some backyard/jackleg gunsmith got his hands on it. Totally out of step with the typical Mauser/Brit workmanship.