The B-25H only carried 21 rounds for the 75mm. The amount you see in Waffle's video is most likely the result of him changing the settings so he can test it offline.
Question is, are we going to have rockets available as well for the B-25H? It was able to carry 8 HVAR rockets as well as carry I think around 3k of eggs on wing hard points.
Despite what some think, it will be a potent town destroyer and field porker.
ack-ack