yes for a shotgun you need a rifle barrel DO NOT shoot slugs if you have a poly-choke!
Yes.
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.
Yes, but, the results will be dismal at best.
No. You can only fire .410 shotgun shells in it. You should never attempt to fire a different ammunition than is stamped on the barrel, even if it appears to fit. If the pressure is too high, or the cartridge doesn't fit, at the best your gun will not shoot properly. At the worst it can explode and kill you.
Yes- but accuracy with slugs in any double barreled shotgun is not the best- the lines of the barrels converge. Imagine a very large X. Right barrel will shoot somewhat to the left, left barrel to the right.
None.
It will be marked on the barrel
In a word, no. In two words, absolutely not. www.countrygunsmith.net
probably not, historicly shotguns are smoothbore if you shoot a slug, THAT would be rifled.
Depends on the ammunition. Rifled 12 gauge slugs are accurate to about 150 yards
yes for a shotgun you need a rifle barrel DO NOT shoot slugs if you have a poly-choke!
thirty
No, not without barrel inserts.
Yes.
You can, but, it will not be a good thing.
long