I made some a bunch of years ago for 06 using Red Dot and a very small tuft of Dacron floss to retain the charge. Wish I could remember the exact charge... 10 grains maybe??? Basically deprime/reprime and use in the same rifle w/o sizing.
As I recall, Govt .223 blanks get a charge of 700x, the amount I can't remember but think it is listed in an old "cartridges of the world" book.