how to tell the distance of a gunshot

Multiple re-entry gunshot wounds possibly inflicted by a single shot We conducted several experiments using a .308 Winchester rifle fired horizontally in the direction of a target located a known distance away while we obtained audio recordings of the gunshot acoustical signals at several distances from the firearm. The particles are characterized by a molten metal appearance with spherical shapes. Shots fired from close range leave tell-tale marks called stippling, or tattooing. So-called "lead free" ammunition may contain one or more elements including strontium (Sr), zinc (Zn), titanium (Ti), copper (Cu), antimony (Sb), aluminum (Al), or potassium (K). Author David Watson learned about rifles from his father, as a youth in Australia. Shooters are more likely to have a greater number of particles than bystanders, but not always. The mutations and number of repeats varies from person to person, making STRs effective for human identification purposes. (Reid et al, 2010), Any hand or body part or object that was close to the fired weapon may have residue appearing consistent with having fired the weapon. With handguns, ball powder can readily perforate one and even two layers of cloth to produce tattooing of the underlying skin (Figure 5.19). [removed] iskela45 9 yr. ago. There is greater particle number with revolvers than with automatic rifles. Most residue originating from the barrel of a gun is burned, unburned, or partially burned propellant (gunpowder) and contains metal particulates, such as lead, copper, brass, or nickel from jacketing material. Some bullet coatings may also contain nickel. The more granular you can be with your observation, the more accurate your distance calculation will be. This image may not be used by other entities without the express written consent of wikiHow, Inc.
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