Comments by "Rick2010100" (@Rick2010100) on "Rifled vs Smoothbore Tank Guns—Which Is More Effective?" video.

Rifled barrel have also two weak points. The power of the propellant can not be extended to give the shell more punch to overcome modern amor. The rifle would wear out extremely quickly, if the barrel wasn't even destroyed. This leads to another disadvantage, the general wear of the barrel is much higher with rifled barrels and this is also a huge cost factor. Changing the barrel of a tank is no small feat. In the case of the UK, the matter is actually quite mundane, the ammunition factory was closed decades ago and the remaining stocks are slowly being used up. For the few remaining British MBTs, it is simply not worthwhile to build a new munitions factory. There is also no export market for this ammunition.
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