I have been doing ongoing test since the second week of the DoF release and haven't noticed any changes in the way arrow tier affects CA damage. The tier of the arrow does *not* affect my CA damage output. At the same time, while doing these tests with my new ironwood longbow I was pleased to find myself doing over 1000 damage with auto-attack when using crafted indium arrows (this was maybe the 3rd week of DoF release) with only my self-buffs in place and my healer standing by to heal (but instructed not to put up any buffs). This is very respectable damage and for raids where strategy dictates a ranged battle I will definitely have a couple of stacks of indium arrows on hand. Someone up above mentioned that they go thru 10 stacks of feyiron arrows every couple of days. If you are supplementing that with iron arrows you may not be making the most of your ranged attacks. I easily burn through 12 stacks of arrows every session (a raid night, an xp session) and keep at least one box always refilled with arrows when I hit town. I am only buying iron and iron hunting arrows, however, so my costs are fairly low compared to buying feyiron/fulginate/indium/indium hunting from the vendor which tends to be cost prohibitive.