I got 50k free xp in a supercontainer(woohoo!) and ended up skipping the Omaha to get the Cleveland.
After playing for a while I noticed 2 main problems w/ the guns:
1. Stupidly slow and high shell arc
2. Even when you do hit something, it under-pens(especially BBs)
Its really frustrating, the under-penetrating shells. I can't get any damage in at all.
Any tips for a newbie like me?