A shotgun choke is found inside the bore of a shotgun barrel. It basically has a series of markings that helps shape the spread of the shot that is fired as it is coming out of the barrel. The specific choke you use determines the range and accuracy of the shot. Many choke models available have identification markings on the rim of each choke tube. That way the gun owner will know what type of choke is installed in the barrel without having to take it out.
Rem 870 with 21″ Vent Ribbed Barrel with an Imp Cyl Rem Choke
Rem 870 with 21″ Vent Ribbed Barrel with an Imp Cyl Rem Choke from Remington 870 Forum:
2 new interesting chokes from Carlson’s company which is well known for shotgun owners. This company manufactures barrels for Remington 870.
I didn’t have a chance to test them, so if you have any info, please leave a comment.
I’ve bought a rifled choke a lot of time ago. Finally, I have tested it on the range today. Rifled choke is believed to stabilize a projectile in flight giving it a spin and better accuracy.
Remington 870 Tips & Tricks #3: The Care and Feeding of Choke Tubes
New good video from Synchronizor:
The two most common Remington 870 barrels are either the rifled barrel or the smoothbore. Rifled barrels are good for shooting sabot slugs like Premier Accutip Slug, Copper Solid Slug etc. These are the kind of barrels you would use if you are aiming to kill someone or something on a longer distance. Perhaps you want to looking to kill a big predator in the woods. These barrels help you have more stability and accuracy with your shots in order to do this kind of damage. If you are looking for a long range shotgun then rifled barrels would be your best option as well. As for smoothbore barrels, these are more suitable for rifled slugs, birdshot and buckshot. In other words, if you are looking to hunt small ducks or birds hen you would be better off using smoothbore.
What is the purpose of a choke in a shotgun?
The choke in a shotgun is designed to shape how the shot spreads after you pull the trigger. That way you can gain more accuracy with your shots as well as better range. The choke is placed in the bore of the shotgun barrel, which is at the muzzle end. There are a two ways a choke gets installed into a shotgun. The screw-in chokes, which are easily replaceable and there are also fixed chokes that integrated into the shotgun barrel so that it is a part of the bore without being replaceable. So which ones are the best to use? Both are acceptable.
There was interesting and useful discussion about chokes on Remington 870 Forum.
Hntbambi has posted pictures which show fixed choke, Removable choke tube (tube removed) and Removable choke tube (tube installed).
Here are pictures, they would be useful for readers which are not familiar with chokes on shotguns: