Super X Pump -- Pump Action Shotgun (SXP)
http://www.winchesterguns.com/customers ... asp?id=287

The SXP is a significant evolution of the exceptional Model 1300 Speed Pump. The Speed Pump established many speed and performance records over the years. The SXP is equally fast and incorporates new levels of quality and excellent value. Today's SXPs are designed and production is overseen by our R&D team in Morgan, Utah. They are then manufactured in our partner factory in Istanbul, Turkey. (Which used to be called Constantinople . . . you already know this if you learned the old song that says, "Now it's Istanbul, not Constantinople.") Istanbul is a key manufacturing and trade center for Europe. Some SXP parts are sourced from our other Winchester group factories in Western Europe. SXPs are available in field models and Defender versions, and they are all assembled in the same factory. In an interesting bit of history, large numbers of Winchester Model 1866s were sold to the Turkish government in 1870 and Oliver Winchester himself, visited Constantinople (Istanbul) shortly thereafter to secure more sales of other firearms and ammunition.

Saw an Iver Johnson today stamped made in Turkey, would this be at the same factory?

I am not sure to be honest but it certainly could be. Let me look into that further.