Rifled slugs. Sabot slugs will not be as accurate- hose are meant for rifled barrels.
Yes
Depends on how old the shotgun is.
Some bolt action shotguns had an adjustable choke, and it is generally NOT recommended that slugs be fired through those. If there is no adjustable choke at the muzzle, your shotgun should be fine. Stay with rifled slugs.
You can, but I wouldn't advise it.
Yes, If shotgun is in decent condition! With smooth bores, I like rifled winchester slugs. 11" drop at 100 yards. They are very accurate up to 100 yds. I get 4" groups and have killed deer very efficently at 80 up to yds..
Yes
Go to the ammunition makers web sites. They list information on their products.
Whatever you can use effectively. Most shotgunners in the US opt for a 12-Gauge, but be a sport and use a .410, with deer slugs.
Depends on the ammunition. Rifled 12 gauge slugs are accurate to about 150 yards
Yes. That's the only type of shotgun you should fire a sabot slug from. Rifled shotguns are intended for rifled slugs only. Actually, the opposite is true. Rifled slugs are preferred for smooth barreled shotguns. The 'rifling' on the slug is actually just fins that permit the slug to squeeze through the choke on the shotgun barrel. Sabot slugs are intended for rifled barrels, as they will give better accuracy. Some sabots may be used in smooth barrels, but you are paying more for sabots and not getting the accuracy you would get by using a sabot in a rifled barrel.
In short, it is a barrel designed to fire slugs. Some are smooth bore which are intended to shoot rifled slugs or buckshot, while others are rifled and intended for shooting sabot slugs only. This is a very good and trusted answer. lcj
Whatever your favorite shotgun is. Personally i have an over-under 12-gauge shotgun with a 29 inch barrel. Works well for duck hunting as well.