The Turkish Weatherbys are well regarded it seems, but I think I would prefer the Escort. The Hatsan-built Escorts offer features the Weatherby offerings do not - these include, reversible safeties for LH use, magazine cutoffs, and 3/8" dovetail receivers. The Escort semi-autos I've handled seem to fit me better than the Weatherby guns (I'm not a big guy at 5'5"), and based on my own experiences with Escort, and what I've read from various sources, I would trust one to run every bit as well as the other, which is to say, quite well. The Weatherby models may be a bit nicer in the finish department, but I think the Escorts offer more features & built-in value for the money. That 20 gauge should definitely be rated for 3" shells, and I believe the Escorts are rated for steel and/or have chrome-lined barrels...
~ SH ~
P.S. The Escort series includes youth and female-shooter specific models with differing stock patterns and fit/LOP adjustability. Legacy Sports is the importer, and they are quite responsive to messages on their facebook page should you have any questions: https://www.facebook.com/LegacySportsIn ... l/?fref=ts