I have a Winchester Model 12 that is made in 1917 with a 30" full choke barrel. I know it's only safe to fire lead shot in it but I was wondering if slugs are safe? I have fired slugs through full choke barrels before without issue but those guns were newer. Someone mentioned that full chokes on these old shotguns is tighter then modern full chokes? It's probably the smoothest pump action i've ever owned and the workmanship is amazing. I have been on the hunt for one for years and this came up at a good price, looks like it wasn't fired much but had a lot of dirt and grime. I fully stripped it and cleaned everything, 100 years of dirt seemed to be inside the action lol. Besides some light surface rust on some parts it has no real damage.