Related Experiment Video
Updated: May 3, 2026

Preparation and Application of a New Bacterial Biosensor for the Presumptive Detection of Gunshot Residue
Published on: May 9, 2019
An unusual case of suicide by handcrafted shotgun and slug
Kazuki Harada1, Yasuhiro Itoi2, Yoshimasa Kanawaku1
1Department of Forensic Medicine, National Defense Medical College, 3-2 Namiki, Tokorozawa, Saitama 359-8513, Japan.
Abstract:
Injuries by handcrafted firearms are uncommon, and those by handcrafted shotguns are very rare. We present an unusual case of suicide using a handcrafted shotgun and slug. A 73-year-old male, who was a glass-grinding artisan, was found dead at a workshop on the premises of his residence. Autopsy showed a contact shotgun wound to the forehead, which perforated the cranium and caused extensive damage to the brain. The handcrafted shotgun was found in the proximity of the body. The shotgun consisted of metal pipes fixed to the vise and did not take the form of a conventional gun. The recovered slug was also found to be manufactured manually. It appeared that the handcrafted shotgun was only intended for committing suicide using his ballistics knowledge, skills, and resources.
Related Concept Videos
Autophagic Cell Death
Autophagy and Apoptosis
Autophagy can activate apoptosis. In normal conditions, the autophagy activating protein Beclin-1 and...
Pharmaceutical Poisoning: Potential Scenarios
Conservation of Momentum: Problem Solving
Unusual Results
According to the range rule of thumb, any value above or below two standard deviations, 2σ from the mean, μ is considered unusual.
Maximum unusual value =...
Anticholinesterase Agents: Poisoning and Treatment
Irreversible agents form a strong bond with the cholinesterase enzyme, making it inactive. The breakdown of the phosphorylated enzyme is...
Lethal Alleles
Lucien Cuénot discovered lethal alleles in 1905 while studying the inheritance of coat color in mice. The agouti gene is responsible for the color of the coat in mice. This gene codes for an agouti-signaling protein, which is responsible for melanin distribution in mammals. The wild-type allele gives rise to gray-brown coat color in mice, while the mutant allele gives rise to yellow coat color. In addition to coat color, the agouti gene is associated with the yellow...

