The 30mm Bushmaster is sucks, don’t get me wrong if the vehicles BR are at 8.7 to 9.3 it is acceptable but most vehicle that carried those cannon are at 9.7 and above, which making them totally underpowered. The cannon itself already consider the worst autocannon in game, almost no post pen damage makes it highly rely on fire rate but this also the disadvantage of it. Let’s not compare it with the best autocannon in game (debatable), 35mm KDA, even the the 25mm KDB-B02 is better than it.