Podcast
Questions and Answers
What is the primary goal of forensic firearm examination?
What is the primary goal of forensic firearm examination?
- To link bullets to weapons and weapons to individuals (correct)
- To improve the accuracy of firearms
- To study the history of firearms
- To design new types of firearms
What can specialists do to trace a weapon's registered owner?
What can specialists do to trace a weapon's registered owner?
- Raise and record obliterated serial numbers (correct)
- Analyze the gunpowder residue
- Measure the weight of the weapon
- Check the weapon's color
What is the purpose of rifling inside firearm barrels?
What is the purpose of rifling inside firearm barrels?
- To make the firearm easier to clean
- To reduce the weight of the firearm
- To improve the precision of the bullet (correct)
- To increase the noise of the gunshot
Why might forensic ballistics examiners limit the number of shots fired from a weapon found at a crime scene?
Why might forensic ballistics examiners limit the number of shots fired from a weapon found at a crime scene?
What are striations on a bullet used for in forensic firearm examination?
What are striations on a bullet used for in forensic firearm examination?
What are sole marks?
What are sole marks?
Where are sole markings commonly preserved?
Where are sole markings commonly preserved?
In what type of deposits are sole markings most commonly found?
In what type of deposits are sole markings most commonly found?
Who first recognized sole markings in rocks?
Who first recognized sole markings in rocks?
What were sole markings originally called due to their structure and creation?
What were sole markings originally called due to their structure and creation?
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Study Notes
Forensic Firearm Examination
- Involves examining firearms and bullets found at crime scenes to establish connections between bullets, weapons, and individuals.
- Specialists utilize forensic processes to link specific bullets to their respective firearms, aiding in criminal investigations.
Techniques Used in Forensic Examination
- Obliterated serial numbers can be raised and recorded to identify the weapon's registered owner.
- Fingerprint analysis can be conducted on firearms and cartridges to find potential suspects.
Bullet Analysis
- Unique striations, or marks, on a bullet are created by the rifling inside a firearm's barrel as the bullet spins when fired.
- These rifling patterns are crucial for linking expended ammunition back to a specific weapon, providing important forensic evidence.
Limitations of Striation Evidence
- Striations on bullets are individualized, making them unique to each weapon, but they may change slightly after each round fired.
- To preserve the integrity of striation analysis, forensic ballistics examiners limit test firings to no more than five shots from a weapon found at a crime scene.
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