I am kicking around getting a 20 gauge semi auto for my wife as a home defense gun. Been looking at the Turkish guns being sold by Weatherby, Mossberg and TriStar. Anyways, the shortest barrel any of them come in is 24 inches. I'd like to have a gun with an 18 inch barrel - 20 inches max which means having the barrel cut down. I realize if I have the barrel cut down, it may affect the functioning of the ejecting and loading. Anyone have any experience doing this? None of these guns offer aftermarket barrels, so if I have the barrel cut and it isn't reliable, it won't be a good thing. Before someone suggest a pump action gun, that isn't an option with her. Thanks.