I recently got an LC Smith FW Field Grade double barrel shotgun. It is hammerless, and its serial is in 160,XXX. This one in particular was made by Hunter Arms in Fulton NY. The two barrels do say full on them, which I would imagine means they are full choke. There is a d stamped on one of the barrels as well. Additionally, the condition is ok. The blue is pretty worn and colored on the lockplates, some screw heads are mangled up, and the stock has some wear. The barrel at the very tip, buisiness end, measures about .625. At the very end of the chamber side of the barrel, it measures about .75. Additionally, the measure of the flat areas on the barrel below the chamber is 2-9/16. I am not sure if this is the measure of the chamber or not.
I am curious as to if any of you can tell me more about this gun; year, gauge, what the d stamp means etc.
Also, can I shoot slugs out of this? My local gun range only allows slugs, and I am not sure if they will harm an old gun like this.