Bastion Capabilities

So I know very little about the Bastion beyond its very narrow firing angle and was thinking of ways to help maximize the efficiency of the use of the tank. Such as at least one person taking a back spit wielding a recoiless rifle for the sake of taking down aircraft or large units on the sides that one may not have the time to take care of by itself without suffering catastrophic damage first. Then I remembered that the SEAF artillery outpost shells may be redistributed to reload the tank instead. I wondered if the abilities of the individual rounds would show through the tank much like it normally would with the artillery gun. That and would it be possible to use another stratagem such as the recoiless rifle to reload the reserves of the main gun? Also are there any other ways to replenish its ammo reserves beyond the artillery emplacements?