I have recently acquired leaden salute. As wiki has stated the only dmg modifiers are AGI and magic att bonus. I obtained a murderer gun thus far and have several more attempts at the earring. With my moldy earring and ugg pendant it surpasses detonator. With dark staff equipped and blm sub I expect much more. I just want to state that you will have the same dmg ouput with peacemaker/reg bullet as with coffinmaker/steel bullet. Aside from Death Penalty, the Murderer/supremacy earring + moldy and ugg pendant are your best bets. As is with normal high lvl cor gear it's just a slightly better version of detonator. Just don't expect much from dark based creatures (i.e bats, slimes, etc) All in all worth the effort if you're a pirate through and through. On a personal note since the update my Nyzul group decided to climg to flooor 100 for the 3rd time. I got the gun on floor 50, 2-4 days later after solo ws ans some light ws points I acquired it at 55. So in my opinion floor 50 = 2k ws points. Hope this helps somewhat, that is all. good day!
-also Vunker crabs are the best for solo, just use splitshot or hot shot for 6 ws points a mob, if in fact you find yourself having to solo any ;p
780 with /nin dub and no ugg penfant equipped top dmg so far