Smooth Bore - Full Choke and Slugs

Greetings,

I will be hunting with a Mossberg 695 and I want to take my wife with me and my 12 Ga Mossberg 500 w/ rifled barrel is too much gun for her.

My father has given me an old 16 Ga, bolt action shotgun with a full choke (forgive me for not having the name). What i was wondering was can slugs be shot through it and if so what type: fosters, rifled, sabots?

I have heard several different opinions about this: see links below from people who say yes you can.

http://www.outdoorcanada.ca/gone_modern.html
http://www.jouster.com/cgi-bin/milshotg ... ?read=5125

I also have a youth model Mossberg 500 20 ***** w/ 3 choke tubes. Would this be a better gun for her and which choke tube and what type of slugs?

Thanks for all the help. This is a wonderful site.