Yugos did have licence...they only gave it own name unlike polish or checz....
multiple sources dissagree with you about Polish T-72 production.
Bustle storage is not exposed, exposed is the flying frying pan manuver of the T-series tanks. if an abrams ammo goes up the crew survives, slap them in a new tank and go back to work. When a T series dies it's crew dies with it.
Ok so ther eis a chance that a rear shot will hit the APU and might start a fire that might mission kill the tank. mean while the T-72 can be taken out form the front with a HMG by shooting the right front fender with tracer ammo causign the unamrored fule tank there to aerosal and ignite.
Is the abrams or any MBT perfect? No but they are light years ahead of the T series tanks.
ie using a copy of the improved autoloader on the T-80U+ for the 2A46M-5 guns and exactly what I said, 560-600mm max penetrator leangth.
RedMecury i got the same numbers (the M829A3's velocity is understanted btw) and that is total possible energy. The longer penetrator allows a more complete/eficent deleivery of that energy.