ORIGINAL: TFOX
First off,yes,1/2" makes a big difference for you because you are on the edge of weak,if you were on the edge of stiff,it wouldn't make a difference.
The reason I recommend AA over OT2 is that AA uses actual ibo speed AND actuall performance of a bow to determine spine.OT2 uses cam style and I have found that when you get into the extreme cases,such as a bow that has an ibo of 330 or more,that hard cam just doesn't cover it anymore.Not much more than an arrow chart imo at this point. IMO,how can a bow that shoots 315 and one that shoots 350 both have their spine determined by a hard cam selection?
You are close enough that you probably get a good tune with field points but broadheads are telling the story.
So,if it were a target setup,you would be fine without lowering poundage.
Well it's my hunting setup as well as my target rig (I'm not full blown into the target scene, but I will be using it). I don't want to buy new arrows, but I suppose I could have them cut behind the front insert. Roughly how long is a standard insert? I don't have any on hand to measure.