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FORENSIC ANALYSIS OF GUNSHOT RESIDUE (GSR)
- https://forensicyard.com/forensic-analysis-of-gunshot-residue-gsr/#:~:text=Infrared%20photography%20If%20bullet%20holes%20are%20on%20colored,and%20the%20gunshot%20residue%20becomes%20visible%20in%20photographs.
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Gunshot Residue Analysis (GSR) - Microtrace
- https://www.microtrace.com/material/gunshot_residue_gsr/
- These particles consist of burnt and unburnt powder, as well as traces from the bullet, its casing, and the gun itself. As the cloud settles, it lightly coats the area with gunshot residue (GSR). GSR will likely cling to the shooters hands, exposed skin, and clothing. Investigators usually sample this evidence with GSR test kit stubs.
FORENSIC ANALYSIS OF GUNSHOT RESIDUE (GSR)
- https://forensicyard.com/forensic-analysis-of-gunshot-residue-gsr/
- Gunshot Residue Examination 1. Visual examination In cases where the firearm is discharged from a close range, the visual examination may reveal burning, blackening, tattooing, etc. Their presence indicates a gunshot injury or a gunshot hole. 2. Infrared photography If bullet holes are on colored clothes, the presence of gunshot residue is masked.
Gun Shot Residue – National Center for Forensic Science
- https://ncfs.ucf.edu/research/chemical-evidence/gun-shot-residue/
- Gun Shot Residue Firearms examiners identify gun shot residue (GSR) by detecting primer residue particles. Most residue expelled from a gun consists of burned, unburned, or partially burned propellant which contains metal particulates such as lead, copper, brass, or nickel from the jacketing material.
Gunshot residue on dark materials: a comparison …
- https://pubmed.ncbi.nlm.nih.gov/30430255/
- The pattern of gunshot residue (GSR) includes important information about muzzle-target distance since a larger GSR distribution diameter indicates a larger shooting distance. GSR may not be visible to the naked eye when, for example, it is located on dark textiles. In such cases, further procedures …
Gunshot Residue Detection and Interpretation: Final …
- https://www.ojp.gov/ncjrs/virtual-library/abstracts/gunshot-residue-detection-and-interpretation-final-report-national
- procedural aspects of detecting and interpreting gunshot residue (gsr) are described, including high-speed photographic study, gsr detection at crime scenes, muzzle-to-target distance estimation, photoluminescence techniques, gsr detection on shooter hands, trace metal detection, gsr pattern interpretation, propellant particle categorization, and …
Gunshot residue particle velocity and deceleration - PubMed
- https://pubmed.ncbi.nlm.nih.gov/15568695/
- The velocity of over 800 gunshot residue particles from eight different sources was determined using high speed stroboscopic photography (spark gap light source). These particles were found to have an average velocity of 500 to 600 ft per second. Many particles acquired considerably higher velocities.
Method for Enhancing Gunshot Residue Patterns on Dark …
- https://www.ojp.gov/ncjrs/virtual-library/abstracts/method-enhancing-gunshot-residue-patterns-dark-and-multicolored
- This study examined whether gunshot residue (GSR) on dark and multicolored fabrics could be visually enhanced by treating the fabric with a solution of sodium hypochlorite in order to bleach it. ... there was an increased contrast in GSR patterns that allowed routine photography of the fabric. Ten of the 12 samples treated with a 5.25-percent ...
Gun shot residue - IR-UV
- http://www.ir-uv.com/gunshot.html
- IR Photos of Gun Shot Residue Hole from 12 ga. slug at appx. 6”. Fuji S3 – IRUV Camera Peca 916 Filter (Transmits Visible Light only) Incandescent lighting Some gunshot residue is visible, but it is difficult to determine how much or exactly where it is located with a standard color or black & white photo. Hole from 12 ga. slug at appx. 6”.
How to Remove Gunshot Residue (Updated on June 2022)
- https://www.gunsafetynow.com/how-to-remove-gunshot-residue/
- What is Gunshot Residue? The residue remaining on the palms, or on the clothing, of someone who has done a few of the following: Shot a firearm Standing near the scene of a gunshot. Came into contact with a freshly used handgun. Came into contact with something recently been used by somebody who has lately used a gun.
Guidelines for Gunshot Residue Distance …
- https://www.nist.gov/system/files/documents/2016/11/28/guidelines_for_gunshot_residue_distance_determinations.pdf
- Guidelines for Gunshot Residue Distance Determinations Page 1 of 8 Revised 04/13/13 Guidelines for Gunshot Residue Distance Determinations ... examiner must document the examination and evaluation including photography and standardized worksheets. 5.0 Safety Standard safety procedures set forth should be followed. When firing known-
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