I use cream of wheat to fireform cases for my 6BR, you have to put wads made of toilet paper or soft tissue with some Crisco on tom to seal it all, I also use cream of wheat in my subsonic loads as filler to keep powder on the bottom, just word of advise stick to fireforming with cream of wheat, I had bad ignition once because of powder got mixed with filler and bullet got stuck in the middle of my barrel...