FugWit2 - I think you made the right decision
I buy any HXP 303 ammo I can find and add it to my supply. Once the HXP price reaches that of loaded Privi, I'll start buying that based on Ed's comments (unless I personally find otherwise).
Just a point to clarify.............the "z" mark on the headstamp of a Britishor Commonwealth .303 cartridge denotes the use of "Nitrocellulose Powder." This differentiates it from cartridges loaded with cordite that have no "z" in the headstamp.