I have combined inner thoughts about the Lee die set. The First Expense would make them look inexpensive BUT in the end, immediately after needing to buy a different expander die (IMHO, you'll need an expander die because it makes putting the bullet into the situation a no brainer) and https://erickgecwp.tblogz.com/300-blackout-bullets-for-reloading-can-be-fun-for-anyone-51990211