K. did a little test with my current gear for you. 4 min runs as you mentioned in the first post. No party, food, pots, Misery's End, DRG, etc. ~440 w/ i130 bow (i115). ~400 w/ i110 Shiva bow (i112). Not quite i110 but close enough. Should note I have a good bit of crafted gear along with the slightly higher ilvl. so maybe subtract 10 - 20 DPS, and it should be close enough.

I think my original estimate of around 370-390 @ i110 seems reasonable. Good on you since you mentioned you are hitting that range. With some practice I'm sure you'll be able to execute just as well in combat.