That will depend on your shotgun. The best way to find out is to buy as many different types/brands as you can and shoot them.
Rifled slugs are actually INTENDED for smoothbore shotguns. Sabot slugs are intended for rifled shotguns. Performance will vary from gun to gun, but Modified choke seems to give the best accuracy with rifled slugs for many shotguns.
Lacking a slug barrel, improved cylinder works best for slugs.
In general, rifled slugs are intended to go through a smooth bore. The twist rates of a rifled slug against a rifled barrel may not agree. If you were trying to get the best out of your rifled barrel I would think that going to a saboted slug would give better performance.
30 inches. A longer barrel gives you better accuracy.
Slugs! If its rifled it is a deer hunting barrel.
Assuming you mean the Remington 870 shotgun, with a scope- is your barrel rifled? If so, sabot slugs are generally the most accurate. If smoothbore, then rifled slugs will be most accurate.
Please dont shoot slugs through a 32" barrel A5. That is undoubtedly a full choke and shooting slugs through it can damage that barrel, which by itself is worth $300. Slug barrels are typically 24" in length with an Improved Cylinder choke.
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.
Your 870 smooth bore with an IC choke is capable of accuracy well beyond 100 yards. You just need to find the brand/type/weight of slugs it likes best.
Rifled Slugs are meant for smooth bore barrels mainly. The rifled slug is made of lead and so if you shoot it through a rifled barrel the lead touching the rifling will cause some of the lead to peal off and can build up over a very short period of time. Also the facft that you are shooting a rifled slug through a rifled barrel would cause the bullet to become extremely unstable and inaccurate. Rifle barrel sare meant for sabot slugs (slugs with a plastic wad surrounding the outside). You should eb good though to shoot a rifled slug out of your barrel with a mod choke tube, but smooth bore deer barrels are ideal.M.I.
Either. In general, slugs can be fired through any standard shotgun barrel. An exception is for Extra Full Chokes, which are not standard. Best accuracy with slugs in probably modified choke.
You can shoot slugs in a double. Slugs are best shot through a cylinder bore or improved cylinder choke. The tighter the choke, the more they will be disrupted. There is risk of excessive wear and damage through a tight choke--tighter than Modified Choke.