hi friends, i have a couple questions about blaster and epic potential drop rate

1.) i'm using magnum punch and revolving cannon together, but i don't notice any increase in damage compared to just using magnum punch. is this because i'm still such a low level (57)?

2.) is blaster really that hard on your hands? main merc and played pretty much all of the other "mechanically difficult" classes but haven't had an issue so far with proper key binding placement. i found evan kind of straining but adjusted my key bindings when it started to become an issue and then was fine

3.) are lower level mobs more likely to drop gear with epic potential? or does it only feel like they do because i'm killing more mobs compared to theme dungeons which = more gear and chance for epic drops? (i stopped doing theme dungeons to lvl 60 and noticed i've been getting a lot which has been nice)