The GAU-8 is auto-loaded, so your updated M1 crew would only need 3 men (bye, bye loader). That frees up a considerable amount of interior room.
A-10 fighters only fly with 1,100 rounds of 30mm. The 105mm and 120mm ammo storage areas in M1's could hold about 3,600 rounds of 30mm.
Each upgraded M1 would pack the firepower of 3 A-10 fighters, and could stay near our infantry for considerably longer under fire, too.
5 Legislative Days Left Until The AWB Expires
So, what's the effective rate of fire for a one in the desert in the the middle of summer? All 3600 rounds, continuously?
And still be able to be re-armed and ready for battle?
Have you ever seen the inside of an abrams? I help make these things, your ideas are frought with costly problems.
Well it does sound like it could be possible. What about heat? I think the gun would surely melt.
However the barrel could be shrouded inside the turret itself and a sealed cooling system could be added around it inside the turret. It would not expose the crew to any hot rotating parts and the turret could be extended a little to the rear.