No
Yes
I have one that I would sell.
Not anymore but I hear you can take a 1300 barrel and have gas ports added and that should work.
no you cannot. sabot slugs are made for rifled barrels. I would buy a rifled slug barrel.
At this time no,there are not any available.You could have a model 1300 slug barrel redone and have the gas ports added to this barrel.Then it will work fine in your model 1400 Winchester shotgun.
A 12ga Winchester rifled Foster slug averages .713" in diameter
Neither barrel is rifled.
Not safely
You look down the barrel and if it is swirled it is a rifled barrel and if it is not swirled it is a smooth bore
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.
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.
Yes, I don't think you should have a problem, but your pattern may not be consistent.