I read in the Escort Fit Thread that Cannons/Heavy Cannons supposedly don't do their full damage when at a distance larger than 2km. However, I couldn't find any information on this anywhere else and also clearly the game does not tell you about this so I was wondering if it was actually true?
Fighting Borg i would not recommend getting any closer than 5-6Km unless you're doing a burst run. You're much more likely to get hit with a plasma torp or get held by a tractor. Also the Borg are more likely to focus fire on you. I've been able to sit back even 8-9KM where they don't even target me and ping away at them. It takes a bit longer to take one down but i don't take any damage so it's worth it.