The diameter
Grooves
Yes, it is called "spiking", although it is likely to cause the barrel to explode if the gun (or artillery piece) is fired. YOU CANNOT PREVENT A GUN GOING OFF, BY INSERTING YOUR FINGER INTO THE BARREL
Looking for someone with history of a single barrel shot gun with wells Fargo & co on barrel and four notches also on gun like to know if its from the stage coach era as the shot gun is called coach
Plug Race or Dash for Cash
the barrel is the long part that the bulliet comes out
Threaded
It's called the Muzzle
On the INSIDE of the barrel, they are called grooves. Together with the ungrooved areas, called lands, they make up rifling. On the OUTSIDE of the barrel, they are called flutes. These are cuts made in the barrel to make it lighter.
The first guns were cannon- they were rather short, and looked like a barrel- a hollow container, round and long.
Usually found with cannon, a tampion is a wooden plug used to keep foreign matter out of a cannon barrel when the cannon is not being fired.
Oxidation of the steel of a gun barrel.