My experience with Victory shafts was "meh" at best- they are very consistent around the shaft, but shaft to shaft consistency is poor.....but....You need to eliminate all variables with you, the bow, the rest,and then the arrows (pretty much in that order).

Assuming your form is consistent-

First you need to rule out the fletching clearance problem. It sounds like either your drop-aways are not set up properly and/or the cams may not be synched correctly. On a C.5 system, improper synch can def cause an arrow to crash low into the rest/riser. Also with your very short draw length there can be an issue with the timing of a drop-away (the cable travel is minimal)- there is little margin for error and bounceback can be a real issue.

Assuming all of that is good, arrows being the problem would not surprise me. I would def step up to a 500 class shaft and see what happens. In addition make sure that you are shooting consistently spined arrows, and that your inserts/nocks/shafts are straight. No broadhead will fly well if the insert/shaft/nock is crooked-and the Victory shafts have a real issue with ID/component tolerances (or rather, lack thereof). I would suggest buying a half dozen Beman ICSH, or Easton Epic STs. These are both good values (especially the Epics), and not terribly expensive for a half doz (try www.southshorearchery.com )