I am making some NOE 360160 WFN's today. 160 grains of fun. It is an RG4 mold (HP mold) but with the flat pins in it, it casts really easy.
But..... if I close the mold upside down, the flat pins don't settle all the way down and they make this really neat indented meplat that isn't really a HP, but kinda is. I cast some both ways, just for the fun of it.