How and why does a longer gun barrel improve its performance, as on a tank? - Quora

What dictates the length of a barrel on a gun/tank? - Quora

What does a longer barrel mean for a gun and why is this? - Quora

Why did countries start mounting a machine gun on top of tank turrets? - Quora

How are tanks produced? - Quora

What are the advantages of a tank's gun having a long barrel and a tank having a short barrel? - Quora

How effective are double barrel main battle tanks? - The Gun Club - Quora

What are the advantages of a tank's gun having a long barrel and a tank having a short barrel? - Quora

How and why does a longer gun barrel improve its performance, as on a tank? - Quora

Why did some German tanks and Soviet artillery pieces have muzzle brakes? Did it improve the canon's performance? - Quora