Below are 3 images of a shotgun that i was gifted from my father.. what i would like to know is what is the best type of shell to use in it.. Lead or steal.. (for bird hunting) and also what is the switch on the bottom that Shows S or R Setting. I don't know a lot about shotguns and want to make sure that I'm not going to be damaging the barrel etc by using the wrong type of shell. What do you guys recommend i use to keep my gun in great condition. Hopefully you can see some of the marking in the pictures i provided. Any Advice and information would be greatly appreciated.
https://www.dropbox.com/s/zwwjqnyf2rlrz0d/IMG_0529.jpg?dl=0
https://www.dropbox.com/s/4hzhyf3n6eb670t/IMG_0530.jpg?dl=0
https://www.dropbox.com/s/aldmvopbkadocio/IMG_0532.jpg?dl=0
https://www.dropbox.com/s/zwwjqnyf2rlrz0d/IMG_0529.jpg?dl=0
https://www.dropbox.com/s/4hzhyf3n6eb670t/IMG_0530.jpg?dl=0
https://www.dropbox.com/s/aldmvopbkadocio/IMG_0532.jpg?dl=0


















































