Left handed and left eyed, I use a Rem 870 Right hand SG with no problem, though they do make a left hand version.
You can get the safety reversed - I didn't- and all the other operating controls are pretty easy either hand.
My other SD shotgun was a Savage 311 12 ga. double barrel at 20 inches- pretty handy and very effective.
One of my Brothers is left handed and he shoots with a Right handed gun all the time. Just watch your face for the casing is all and most of time it flows right by no problem. Be better to prob learn how to shoot Left handed with a right handed gun. In the long run its cheaper and better.
Close range hunting so I want something with an 18" barrel. I was thinking that the newer shotguns might have stocks that are tailored for right handed folks, plus the safety may be a factor, and anyone making a lefty, say Benelli for instance, the barrel is always quite long.
I'm guessing one could just keep the left action and toss on a different barrel and stock perhaps.
I'm a lefty and have used numerous types of shotguns over the years. I've just gotten used to righty guns mostly. I like the Ithaca 37, and BPS & anythig w/ a tang mounted safety.
I currently shoot a Winchester SuperX2, and a Rem 11-87 most of the season. I think your going a little short on the barrel.
The only left handed gun I own is my Ruger M77
Lefty here, and was reading this with interest.
My Remington 1100 (semi auto) was my first shotgun, and unless I was wearing glasses, I would get powder residue in my eyes occasionally. This had convinced me that a pump is the way to go.
Most "left hand" guns will not swap with regular barrels- the action and bbl are mirror imaged from the right hand build. The left hand bbl choices are few and hard to find. The Ithaca 37, Browning BPs and most SxS shotguns are truly ambidextrous.
The Remington 870 and Moss berg in right hand are perfectly usable for left hand shooters, and offer the most choice in accessories and bbls.