I like Maria & or Mysterious Magnum. Lucky is good early on in the game but sort of becomes useless when you get Mysterious Magnum with SWC handload.
No cause if you build your character for criticals (high luck , perks like finesse , better crits , built to destroy etc ) , Lucky has a Much higher critical chance than the Mysterious magnum (even without Perks , Lucky has more than double critical chances ) .
Also at closer ranges , Lucky use less AP in VATS and for medium range , it is clearly more accurate than the Mysterious Magnum as it has almost twice less spread .
I love the Mysterious Magnum , it deals a lot of damage with SWC ammo , it's excellent in 1vs1 , but i still prefer Lucky for all round use , it's also lighter and cheaper to maintain