I recently purchased a custom 300 win mag that was chambered for a 220gr bullet. I would like to use varget since I order that in mass bulk for all my .308 and .223's. Just didnt see it possible with a 220gr smk bullet. Can anyone tell me why or why not? I would like to experiment with it if it is safe and try to work up a load so I can keep everything simple in my reloading room.