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Public. the handwriting at the bottom of the page was consistent with bramblett's known handwriting samples. firearms expert van roberts compared the bullets from the murder victims to the gun found next to blaine hodges' body. even though the gun had no barrel, it still had its firing pin. under a comparison microscope, you can see the unique marks made on the shells from the gun's firing pin. the firing pin marks from the gun at the crime scene matched the spent casings found in bramblett's truck and the casings found in the hodges' home. the fbi conducted an elemental analysis on the bullet...

Semiautomatic fire, chambered to fire .380-caliber ammunition. >> the test casings from the gun were examined with a comparison microscope. viewed side by side, the shell casings left no doubt the murder weapon was justin bullard's gun. >> the boots were mr. bullard's. the gun was mr. bullard's. the last phone call from the victim was to mr. bullard's apartment. >> but despite the overwhelming evidence, bullard not only denied he was the killer, he came up with the incredible tale that someone must have stolen all his things, committed the crime, then returned them.

Texas crime scene. what does that tell you? >> well, anderson, it tells me that they have a little bit to go on. the fact that they have the same brand doesn't really tell me much. i mean, hornaday ammunition is sold throughout the country. you can get it anywhere. the fact that you have the same caliber along with the other details like a similar late model vehicle tells me that they have reason for an association, and i guess moving forward, they are going to look to get the cartridge cases from the homicide in colorado to the same location with the cartridge cases recovered from the car, an...

>> most guns are capable of leaving individual characteristics on fired cartridge casings and bullets and if this gun did in fact do that, it shouldn't be very difficult for a forensic examiner to determine that. >> how long would that take? once they got the casings together? >> it could take anywhere from five minutes to 30 minutes. >> okay. do they actually have to have the physical casing or can they do it from a photograph? >> no, no, no. they have to do the physical casings. both cartridge casings or all the cartridge casings from all three incidents need to be in the same location under...

Difficult for a forensic examiner to determine that. >> how long would that take? once they got the casings together? >> it could take anywhere from five minutes to 30 minutes. >> okay. do they actually have to have the physical casing or can they do it from a photograph? >> no, no, no. they have to do the physical casings. both cartridge casings or all the cartridge casings from all three incidents need to be in the same location under the same comparison microscope. >> i appreciate your expertise. thanks for being with us. i want to bring in vicky banky. until a few years ago she knew evan e...