dani
Go Ducks!
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- Jun 26, 2004
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Jodi's claim that Travis lunged at her "like a linebacker" when the gun "accidentally" went off peaked my interest. Knowing that JM was setting a trap I did a little Googling to try to learn about GSR (Gun Shot Residue) and stippling. Specifically, I wanted to know about what forensics could determine about the distance between the gun and the victim at the time the gun was fired, and what exactly "stippling" means. I also wanted to know if either could be rinsed off with water.
I learned GSR can be washed off and that it begins to go away much like chalk on the teachers hands goes away with brushing the hands together, putting hands in pockets, and touching other things. LE hopes to be able to test for GSR within 3 hours of the shooting. But "stippling" does not wipe off.
In Jodi's scenario, with Travis tackling her his head would have been very close to the gun which would leave GSR and stippling. According to the Medical Examiner, "This was definitely not a close contact wound and it produced no star-shaped entry, soot or stippling." I figured Nurmi could counter the idea of there being no GSR or stippling by saying it was rinsed off in the shower.
I found this website:
http://www.pathologyexpert.com/boards/forensics/gsw.htm
The site says:
Definitions:
Fouling: Soot, residue of completely burned powder, dust-like, wipes off
Stippling (tattooing): Unburned powder and debris, causing punctate abrasions on target. Larger and heavier so travels farther. Does not wipe off.
Margin of abrasion: Characteristic of enterance wound but can be seen in shored exit.
Range of Fire:
Contact: muzzle of gun touches target
- Tight: fouling in tissue, muzzle stamp
- Loose: fouling on skin and in tissue, searing
Close: <6" Stippling & Fouling
Intermediate: 6-30" Stippling
Distant: >30" Neither
(Distances approximate and depend on many variables. For accurate assessment need to test fire weapon with ammunition used.)
Since stippling does not wipe off, the gun Jodi was holding was more than 2 1/2 feet (plus the length of her arm) from Travis when she fired.
Start planning your menu for that last meal, Jodi. No more Tootsie Pops for you!!!:jail:
I learned GSR can be washed off and that it begins to go away much like chalk on the teachers hands goes away with brushing the hands together, putting hands in pockets, and touching other things. LE hopes to be able to test for GSR within 3 hours of the shooting. But "stippling" does not wipe off.
In Jodi's scenario, with Travis tackling her his head would have been very close to the gun which would leave GSR and stippling. According to the Medical Examiner, "This was definitely not a close contact wound and it produced no star-shaped entry, soot or stippling." I figured Nurmi could counter the idea of there being no GSR or stippling by saying it was rinsed off in the shower.
I found this website:
http://www.pathologyexpert.com/boards/forensics/gsw.htm
The site says:
Definitions:
Fouling: Soot, residue of completely burned powder, dust-like, wipes off
Stippling (tattooing): Unburned powder and debris, causing punctate abrasions on target. Larger and heavier so travels farther. Does not wipe off.
Margin of abrasion: Characteristic of enterance wound but can be seen in shored exit.
Range of Fire:
Contact: muzzle of gun touches target
- Tight: fouling in tissue, muzzle stamp
- Loose: fouling on skin and in tissue, searing
Close: <6" Stippling & Fouling
Intermediate: 6-30" Stippling
Distant: >30" Neither
(Distances approximate and depend on many variables. For accurate assessment need to test fire weapon with ammunition used.)
Since stippling does not wipe off, the gun Jodi was holding was more than 2 1/2 feet (plus the length of her arm) from Travis when she fired.
Start planning your menu for that last meal, Jodi. No more Tootsie Pops for you!!!:jail: