I haven't played in a DnD campaign with balanced magic items in a long time.
In one campaign, I was a 7th-level ranger who did 1d8+10 + 1d6 fire damage to opponents who were not my favored enemy and who were more than 30 feet away. Then again, the bow itself was worth 98,000 gp, and that's not taking into account ridiculous amounts of stat-boosting items, etc. I practically single-handedly killed the last boss monster beofre the big change. After the time travel (long story) and the removal of magic items, I was doing 1d8+1 damage.
In a Modern campaign I'm wrapping up, I have a martial artist PC who does 1d10+4 damage per hit (and can attack 4 times per round ... he just reached 13th-level).
In a D20 Modern campaign I'm just starting up, which takes place in Three Kingdoms China, I have a 5th-level PC who can do 2d6+7 damage a hit. (Three helpings of Melee Smash helped.)