My 650 stays set up for .223 the vast majority of the time. I'm putting together an SBR in .300BLK, and am to the point of thinking about ammo. I'll be shooting primarily subsonic. Don't know what bullet yet, but I'm looking into powder coated cast lead.

I have a spare toolhead, so I think all I'll need are dies and a second powder measure. Do people run a crimp on that cartridge? Any reason to buy Dillon dies?

Pitfalls, lessons learned, sound advice? Give it up!