I wish I could have made it out to shoot.......408 w 18X's is quite respectable.
I saw that Mike Ringer shot a 430 w 34X's in HC. More power to him I guess but I think he's been shooting HC forquite a few years.
I sawanother guy post on Atalk that he shot a 420 in HC and I know he finished about 13th or 14th at Worlds last year just out of the finals so that might give you an idea of your progress?
If you shoot points up in the Triple Crowns or worlds you should be top 10-15. I have heard from experienced shooters that Indoor Worldsis easier overall and that you can probably knock 15-20pts off the shooter's scores to figure an approx Triple Crown outdoor event score for that person.
I know that's generalizing but it might give you an idea where things might shape up for a Triple crown event.
Good shooting though! do you know where you guys placed?