My hopes were that there would be a donor case that would be as easy to convert as .223 to 300blk but that isn't reality. I have been reloading for a couple years now but don't have any experience with body bump dies, neck turners, etc. I am just getting into the precision rifle game/long range shooting. So i guess my point to this is that i am trying to learn but some of this is just out of my skill/knowledge range right now. So for now i think it is better for me to just buy the factory brass.