Welcome to the forum gmww! Just a reminder the case capacity for fire formed x39 brass will be less than 6.5 Grendel brass. Starline brass will post on their web site you can back order 6.5 Grendel brass. Many orders placed this way ship within a short period of time.
Last week Starline opened the back order. It is not available when I just checked but it is worth watching. Midsouth Shooters Supply tends to get Hornady brass frequently.
https://www.starlinebrass.com/65-grendel
Last week Starline opened the back order. It is not available when I just checked but it is worth watching. Midsouth Shooters Supply tends to get Hornady brass frequently.
https://www.starlinebrass.com/65-grendel