Lee makes a good mould for this. Inexpensive as heck.
I have one that I use for .450-577 martini rounds. Don’t own the .480 Ruger or .475 Linebaugh yet but have been interested, ever since I walked away from a good used Bisley deal. Gone when I went back.
Darn it!
Anyway this Lee mould has been excellent. Especially considering it’s less than $30.
