I have them on order too, but it appears Hornady is tardy in shipping them out to the big sellers (cabelas, midsouth, midway). My sabots already arrived now just waiting on the bullets.

I'm trying the .458 325 first. They are publishing a .223 BC for it if I recall, and a .23 for the 265gr .44. My first plan is to push the 325 as fast as possible for greater long range energy; if I can shoot it at 120gr+ I'll be happy (even if my shoulder isn't).