yes, as long as it is in good condition. I would have it checked by a licensed gunsmith just so you don't have it blow up in your face.
yes
Yes.
Depends on what it is choked.
This for firearm saftey or somethin..... K the parts of a shotgun shell are the gunpowder primer casing and the bbs or slug
Yes: A Remington 870 shotgun with a modified choke will shoot any commercial shotgun slug.
Any non rifled slug. However for best perfomance you want a "saboted" slug.
A properly loaded shotgun shell slug load, yes.
Yes, but, DON'T DO IT!!!!!!!!
Yes, if it is a 10 gauge shotgun.
Yes
A slug is a mollusk like a snail, if you mean a slug like from a shotgun about length of shell, slug can also be slang for bullets which can be literally any size up to max.
a slug is normally use in a shot gun and they are not rifled a gun with a rifled barrel should shoot a Shell that is the same caliber as the gun.