Yes
You can, but I wouldn't advise it.
Depends on how old the shotgun is.
Pellets or slugs. shotguns usually shoot shot or pellets, but you can shoot slugs. in Indiana we use a shotgun to hunt deer and use shotgun slugs, better to use a barrel with no choke in it. cylinder bore preferred.
Rifled slugs. Sabot slugs will not be as accurate- hose are meant for rifled barrels.
Needs to be checked out by a good gunsmith
Rifled slugs are made of soft lead purposely for use in smooth bore shotguns. Actually the "rifling" on the slug deforms to allow the slug to pass through the choke in the bore. If your firearm is of modern manufacture and in good condition it should be safe. Of course it goes without saying that you must use the appropriate type (i.e 2-3/4", 3", etc.) and gauge (410, 20, 12 etc.) of ammunition for which your firearn was designed. If in doubt, have a reputable gunsmith check it out for you.
Of coarse that's what slugs do :)
Cylinder bore- no choke at all.
yes you can shoot rifled slugs through smooth bore barell, or use rifled choke for sabots. the sa08 takes the same choke as mossberg...win, etc.
Death and distruction. Not a good idea at all....
Not unless you have to change the choke tube.
Quite so,however like any other firearm everything really depends on the steadiness of the shooter.