A bullet test tube (10) is taught having a media (22) for measuring a wound cavity (20), bullet penetration (52) and recovering a bullet (30) from a discharged firearm. The bullet test tube is made with an integral cylindrical tube (24) with both ends (26) open, cut to length from a cardboard tubular shipping container having a foil liner (28). The tube is filled with the media by casting at an elevated temperature preventing adherence to the sides of the tube and allowing the media to solidify internally without cracks or other deformities. A basic test tube (32) is utilized and a varied number of extenders (34) may be added according to the energy influence of bullet (30) under test. Covers (48) and (50) are provided to enclose the open ends of the various cylindrical tubes preventing contamination from debris during handling and shipping.