In carrying out 223 blanks I dimension and key scenario as regular. I exploit among seven and 8 grains of Pink Dot. That offers it a good loud sound which is reliable. I utilize a C H crimp die to finish it off. Occasionally the shoulder will buckle a little https://strapweaponshop.com/product/triple-r-munitions-223-5-56-nato-blanks-100-rounds/