Re: 30-338 LAPUA
I run the 338 brass for my 30-338 Lapua Imp into the FL bushing die with a .334" bushing, one step.
2 steps may be better, but I fire form mine with cream of wheat after this, but before I neck tuning to fit anyway.
I have a reamer print for the 300 Gonzo also, which I believe is Mike's design. It's shorter than mine and Wayne's full length versions though. No contact # for him tho. Good luck.