I was asked if I used Alum still. the real question was about the Uni bushing..
As promised here is a picture of my Beat up Uni Bushings
beat up uni bushings.JPG
You will note the center Un damaged one .. for now (its new)
while the outer 2 are scared and the dip I had done is chiped.. They can take a hit as you can see buy the dents... these bad boy arrows weigh in at 525 and the worst i have done is blow apart a nock or 3 and rip up some fletching in 11 years.. that and of corse buy new ones...lol
So if your thinking of ...Why not use Alum, I say go for it One dose not have to use swedged ends if one don't want to...lol
glue the uni bushing In, press in nock and rotate it where you want it