Jumping on the bandwagon! But in a cheapskate way... I just ordered Hornady 22 Creedmoor dies and a 1:7 twist SS Green Mountain barrel blank. I'll stick it on my Savage 10TR action. I plan to thread the muzzle 5/8-24 because I don't like 1/2-28 threads. I've seen muzzle belling on 1/2-28 threaded button-rifled barrels. I'm sure better cut-rifled barrels are less susceptible to this.
I've got H4350, H1000, and IMR 4831 powders. Should be a good start for the 88 ELD-M, 77 LRX, and 75 Scirocco. Hopefully I can also get the 77 Nosler CC to shoot straight because I've got almost 1000 that don't seem to do well in my AR15.