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...
No paddle its not, a resizing die only makes a case smaller while shooting it in a gun makes it larger. If you have a wildcat round and there isnt any factory brass for it you need to shoot a close fit piece of brass to your chamber. You cant use a full load or else you could cause case head seperation in some situations. So you have to use a load with a small charge of shotgun or pistol powder and since there is such a small amount you need something to compress it so it lights uniformly. It is not dangerous if you do it correctly it has been done for a loooooong time
Hope that helps
I'm 15 "Firearms are second only to the Constitution in importance; they are the peoples' liberty's teeth." ~George Washington
"The only advantage a light rifle has is weight, all other advantages go to the heavy rifle."
~ JE Custom
For my cream of wheat fireforming and subsonic loads I use IMR Trail Boss, it takes more space then shotgun or pistol powder, just 16 gr of Trail Boss will fill 308 case and you only need 8gr to fireform, also 8gr of this powder will drive subsonic 168 gr bullet...