Not unless you have to change the choke tube.
The TIGHTEST choke (which is smallest) is the Extra Full. The largest (no choke at all) is known as a cylinder bore.
Smooth bores are bores or barrels in guns that do not contain rifling. Rifling is made up of lands and grooves that cause the bullet to turn within the barrel of the gun. This turning gives the bullet and gun its accuracy. A smooth bore gun is much less accurate than a rifled bore gun.
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.
No The last referenced smooth bore rimfire shotgun that I can find, was the Marlin Model 25MG "Garden Gun" made 1999 - 2000.
It can, but you will probably get better accuracy with improved cylinder bore or cylinder bore using slugs. It depends on the gun.
There are several BB/Pellet gun models on the market that have smooth bore. If your model is designed for both BBs and Pellets then you you can shoot both.
Do not try it, the likelihood of the gun exploding in your hands is very high.
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
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.
The bore refers to the hole in the gun barrel thru which the projectile (bullet) passes. Some guns have a smooth bore, but many modern guns, both pistols and especially rifles, have a rifled bore, that is, the bore has a helical (spiral) groove that causes the projectile to spin as it flies thru the air. The diameter of the gun's bore determines the size of the bullet or shell (e.g. .22, .45, 9mm, etc.)
Between 500 to 700 dollars depending on condition and location
In the true sense of a cannon (smooth bore) yes. If the field piece has a rifled bore then it is technically a rifle. Modern artillery is primarily composed of large bore rifles. Tanks are an exception to this, their main armament is commonly smooth bore, although more and more are starting to revert back to rifled bores.