There are many barrels available for the Remington 870 and other shotgun models. Most of the barrels have standard lengths like 18.5″, 21″, 26″, and 28″. Some of them are a smoothbore and some of them are rifled. In addition, there are many chokes available.
So, which one is better to shoot slugs with? Which one is more accurate? What is the best slug barrel? Usually, shooters and instructors recommend using a Cylinder or Improved Cylinder with slugs. Some shooters know that there is a rifled choke option, but they are not sure about its efficiency.
I conducted a series of tests to understand shotgun, chokes, and slugs much better. It took a lot of time but now I can share the results with you.