So, I'm relatively new to the job (I main a tank) But I think I'm confident enough in my pew-pewing ability as a BLM.

My BLM is i83 ATM, and I've tried every end-game content as BLM except coil, from what I've seen the BLM doesn't seem to output as much single target damage as other ranged DPS can do, my absolute best results are 270~ DPS on ultima HM.
On titan EX (which is pain in the ass due to movement) I got around 220-230 average DPS.

Are those numbers "normal" for my gear level? if not, can anyone give me some pointers? I would love to bring the full potential of BLM because I found the job to be pretty fun, albeit simple.