Forensic Assignment #7

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1. Revolvers feature several firing chambers within a revolving cylinder. a. True b. False 

2. Shotguns feature a barrel with lands and grooves. a. True b. False 

3. The diameter of the shotgun barrel is expressed by the term gauge. a. True b. False 

4. The microscopic drill marks left on the barrel’s inner surface are randomly irregular and serve to impart uniqueness to each barrel. a. True b. False

 5. Any contact between the tool and the marked surface may alter the mark and will, at the least, raise serious questions about the integrity of the evidence. a. True b. False

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