To focus the pattern of shot.
Depends on what you are shooting. A Modified Choke gives a medium "squeeze" to the pellets passing thru the end of a shotgun barrel, thus producing a denser pattern of shot. A full choke squeezes more, and a cylinder choke, not at all. A denser pattern may mean slightly greater range with birdshot- but it will also mean the shot pattern is smaller, reducing the chance of hitting a bird in flight. In general, modified is a "middle of the road" choke, and fairly useful in hunting- but not in skeet, trap, or sporting clays.
The correct answer is Super full.
A choke is a device placed on the end of a shotgun barrel that changes the pattern of the shot as it leaves the rifle.
the barrel is narrowed at the muzel for a tighter shot pattern.
The Choke of a shotgun is the amount of barrel restriction at the muzzle end which affects the shot pattern. A full choke will keep the spray pattern of the pellets closer together farther out than if the barrel was not restricted at the muzzle. If there is no restriction at the muzzle, the choke is said to be cylinder choke or cylinder bore.
A choke is a small reduction in the inside diameter of the barrel, very near the muzzle. The choke squeezes the shot together, resulting in a more dense pattern of shot, and increasing the effective range somewhat.
A full or extra full choke will hold shot in a tighter pattern
the barrel is constricted at the end to make the pattern of shot flow density wider or tighter. Usually from cylinder up to full choke
Either a full choke,or extra full choke shotgun barrel.
To determine different shot patterns
It is called a choke, and is design to tighten the pellet pattern.