But no sure which projectile to use or where to find it
My go-to load with 180 grain bullets in the 30-06 is 61/62 grain of Norma MRP, depending on the rifle.
Gives very good velocities, and is generally quite accurate as well.
However, many powders are suitable, from the W760/H414 sphericals up to Reloder 22 and MRP. Dave.
58Grs H-4350 Sierra ProHunter 180Grs .... 2925 Fps