Thank you, gentlemen!
Such a big pannier for such a small bomb 
Yeah, it does look like a 'pimple on a drum', as my mother would have said. But the reasoning is that the aircraft is already set up to have bomb panniers, and modifying it to a different style of underwing hard point wasn't in the cards, so the depth charge itself was modified to hang on the shackles in the pannier. Might put that in a revised back story.
