If you have a kinetic bullet puller you can always take surplus ammo and remove the projectile from it might be easier if you dont want to use steel cased ammo. Im doing that with some old wolf 223 someone gave me. My AR rips the rims off of wolf so im just taking the projectiles out and loading them in to brass cases.
I thought this round was .310?? not .311?? My lee dies have a .310 expander and a .308 for the ruger mini 30.