Yes.
Yes and no. The yes comes from simple fact, if the projectile can move down the barrel, it can be fired. I've seen .221 Fireballs fired out of a 7TCU barrel. The no is because you cannot do it well. In effect, if you shoot a slug down a smooth bore shotgun barrel, you will have little in the way of accuracy. Slugs should be shot from a slug barrel, and shot from a smooth bore.
Possibly, a copper slug is made for a barrel that has riflings in it and has a straight bore, so if you try to shoot it out of a smooth bore you could mess up the choke, because the copper is solid where as a rifled slug is made of lead which is softer and is hollow in the back side with a plastic piece as a filler to allow for compression. Also if you did shoot a copper slug though a smooth bore it would not be accurate at all.
Shooting rifled slugs is the ONLY way to shoot thru a smoothbore for deer. If you shoot sabot slugs thru a smoothbore, it will not spin and therefore not be accurate. For accuracy, the slug must spin out of the barrel. Either shoot a rifled slug thru a smooth barrel, or shoot a saboted slug thru a rifled barrel.
NOPE. with out rifling, be it barrel or slug itself, there would be no spin on the slug. You would have minimal accuracy.
some firearms, like shotguns, have smooth bores. Due to the wide variety of different projectiles a shotgun is expected to shoot (from a fine dust-like shot, to a single, solid chuck of lead called a slug), the best type of bore, in this case would be a smooth bore. With a rifled barrel, you want to shoot ONLY a projectile of a specific diameter. This way, the rifling grooves can grab the projectile and impart a spin to it. With a shotgun, the presence of rifling would only confound things, and likely the rifling would get worn out / damaged by the wide variety of projectiles sent through it.
100-450 USD
Slug guns have a fully rifled barrel like a center fire rifle. This helps improve accuracy. A regular shotgun barrel is smooth bore with different choke tubes for a specific desired shot pattern.
A single, non-rifled projectile shot out of a rifled bore shotgun (specifically a slug gun).
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.
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.
Depends on what it is choked.