Thank you gentlemen for your replies. I should have guessed CoW stood for Cream of Wheat, a breakfast cereal.
Unfortunately, cream of heat is not sold here in the UK. Web research suggest it is like a coarser grained semolina type cereal grain. This got me thinking, maybe other breakfast cereals could be substituted, like bran or finer grained oats? Any experience. Fire forming using cereal filler and tissue / toilet paper may not be 'allowed' on the rifle club range I belong to, however, I do have access to a friendly farmer's slurry pit.
I am leaning towards just firing factory .30-06 rounds in the rifle - practice and fire forming in one step providing it is completely safe for both me and the rifle. As I mentioned before, that is a big plus with the Ackley Improved rounds. It can be useful to have correctly head stamped brass sometimes, but since it is a ".30-06", just improved, it should be ok most of the time, maybe just not international travel.
