Copperman; you seem to be describing a process/products available from Dave Corbin: http://corbins.com/powder.htm
About 20 years ago; the Department of Energy was making a big deal of having moved to Copper Powder/Sintered bullets for their Security Forces as a "Green" as well as a safety measure to prevent ricochets/other potential collateral damage should shooting event occur. I have not made nor used the Powder/Sintered style bullets; let us know how it works if you go down that trail.