Well, I don't know about the Marshal - but the Jackal is fine.
On a slightly other topic, I'm piss sour over being killed by stray shots.
ONCE AGAIN, a health boost in general would be nice.
Marshal is only good at really really close range-- its a stereotypical videogame shotgun. It works well if you play appropriately and is a good choice for the perk that lets you carry two guns.
Jackal is godly. One of the best guns in the game. They just need to make single-shot default because the other mode is totally fracking useless.