1. What’s the difference between a .38 and a .380?

2. What types of things do you need to think about when performing a muzzle to target distance determination? (Don’t just define a muzzle to target determination: discuss what items you must think about as you perform this type of examination)

3. What are some reasons a tool would be reported out as inconsistent with a toolmark that tool did actually make?

4. If you develop a serial number, and you realize that you do not have all the numbers/letters, will that partial serial number be of any use?

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