application_number US 85972077 A description referring to fig1 the target practice system includes cartridges 10 bullet reloader 12 and bullet trap 14 marksman 16 holding a firearm 18 of a selected caliber is positioned twenty five to seventy five feet in front of target 20 which is mounted on bullet trap 14 as shown projectile 22 is accurately following the aim of marksman 16 generally several bullets are fired from firearm 18 then target 20 is scored in the well known manner referring to fig2 projectile 22 includes a cylindrical core 24 having a diameter less than the inside diameter of the rifling of the selected firearm 18 the core may be machined or die cast from almost any material including for example aluminum or a hard alloy two outwardly opening u shaped channels 26 and 28 respectively extend circumferentially about core 24 channels 26 and 28 are spaced apart preferably by a distance equal to or greater than the diameter of the bore of firearm 18 recess 30 extends along the axis of core 24 from channel 26 to channel 28 recess 30 permits the core 24 to be of lighter weight and could accommodate another ring core 24 has a forward end 32 and a rearward end 34 a radius 36 may be provided along the edge of the forward end 32 to minimize tearing of bullet trap 14 during shooting end 34 is formed by a truncated cone 37 which tapers rearwardly from which extends a cylindrical tail section 38 the cylindrical tail section 38 has a powder receiving hole 40 the center of which extends along the axis of core 24 the depth and diameter of hole 40 is selected to receive a measured amount of powder or propellant as will be.