I think the cause of your aluminum problem is more with the second reason than with the first, Hotburn.
Those crummy old, soft 6061 alloyEagle aluminums will bend from impacting a target. Heck, those things will bend even if you frown while looking in their general direction.

Ultra light, thin walled XX75's will bend too. I've had them (especially 2213's) accordian up on themselves. I can't see how a tough shaft like theXX75 2216 would bend from simply being shot into a target though.Just working on an educated guess, I'm pretty certain they were all bent by having to wrestle them back out ofthat stubborntarget.
I'd betif you would'vehad that nifty arrow pulling tool that awshucks is showing off, you'd never have benta single one.