New Type98/99 MBT thread

[totenchan]

A lot of people don't realize that barrel improvements is minimal compared to projectile improvements. The M829 series, is in the end, extremely length constrained at 985mm total length including propellant and case. A longer case and a longer round (1100mm+ total) simply is more effective. Not to mention that the L44 gun is in fact an outdated platform which is about 20% shorter than the 105mm L60.

I mean exactly long can it possible be while still fitting inside the turret of the new tank? The turret itself is not really exceptionally long.

 

[Tanker_MG]

I mean all we know is that it's a 105mm gun, nothing about the case capacity, barrel length, metallurgy, so constraining ourselves to the idea that a 105mm must be weaker sounds like 5.56 must be worse than 7.62x39

True that all we know is that it is just a 105mm main gun, and you are right about not knowing the facts, but it is physics. A 5.56 or 5.8mm comparison to 7.62x39 is not the same physics and requirements.
Which the requirements that drone this vehicle to have a 105mm is not known. It could be just that the PLA determine the threat does not warrant a 125mm or 120mm or larger gun to accomplish the mission.
I am stating to compare the 120mm M829A4 to a 105mm is not the same. There is a reason why Army and arms manufactures went to larger gun tube diameter sizes to allow performances to achieve the effects and accomplish the mission parameters. Physics is physics.

Totenchen just posted a great answer too. Great discussion though and I appreciate it.