Method of manufacture of a powder-based firearm ammunition projectile employing electrostatic charge

A method of producing a powder-based core for a gun ammunition projectile comprising the steps of

• introducing into a mixing vessel a first metal powder having a density greater than the density of lead,
• introducing into said mixing vessel a second metal powder having a density not greater than the density of lead;
• introducing into said mixing vessel a micronized polymeric powder;
• mixing said powders within said mixing vessel in an electrostatic environment for a time sufficient to produce a mixture within which at least said first and second metal powders are substantially uniformly mixed throughout said mixture and stabilized against separation of said first and second metal powders, by gravity, as a function of their respective densities,
• dividing said mixture into individual aliquots and die-pressed each of said aliquots, at room temperature and without removal of said micronized polymeric powder from said mixture, into individual self-supporting compacts.

A powder mixture suitable for conversion by die-pressing at room temperature into a self=supporting core for a projectile for gun ammunition comprising

• a first metal powder having a density greater than the density of lead,
• a second metal powder having a density not greater than the density of lead, and
• a micronized polymeric powder carrying an electrostatic charge,
• at least said metal powders being substantially uniformly distributed throughout said mixture and stabilized against separation thereof, by gravity and as a function their respective densities, during conversion of said mixture into individual die-pressed cores at room temperature.