Hogdogs....
I'd suggest that you first master the fine art of posting BEFORE you attempt the even finer art of making your own boomies...
To the specifics of your question, I don't know.
But, I know that tannerite and tannerite analogs (essentially pelletized ammonium nitrate coated with things like powdered aluminum that make them go boom under the influence of a high-powered rifle bullet) are legal.
I think things start to get a lot sketchier past that.
My advice?
If you have to ask, you ask an expert, as in BATFE. A written response from them will go a LONG ways towards keeping you out of jail.