The final load is for .223 and the primary goal is for it to be as cheap as is feasible. Any respectable loading should be more than adequate for plinking out of my M17
Fed 205 or other appropriate primer
27.2 Grs SRB-118 Powder
Any 55 Gr FMJ-BT bullet
IF I ever shoot up that surplus SRB-118, I have a jug of 2230S surplus I bought cheap too.
Moral of the story? Shop for a deal on surplus powder. It can really cut costs. These days there is not as much cheap surplus available as there once was though. (I also miss the $30 per K bulk 55's.)