Since I can't find the nocks I want I am going to turn a batch myself...the lathe needs something to occupy it's idle time anyway. I have made up a fixture that allows me to mount an arrow in my milling vise and index the vanes right where I want them (on the arrows that are already fletched. My Grayling jig should be here this week then the REAL fun begins!). Then I can mill out the flat nock that is already cemented in place...no alignment issues as the adhesive dries. I just need to know if 6061-T6 will be durable enough or do I need to go to 7075-T6 for this application. Any thoughts?