1.what do you think would be the most interesting aspect of working with firearm evidence? what do you think would be the most challenging part?

The most interesting aspect of working with firearm evidence is finding out which type of firearm was used and inspecting the bullet and matching it to the archives of guns and bullets. However, the challenging part is tracing which person used the firearm and evidence and is the suspect of a crime. Also, tracing the movement of the bullet used from where it was shot and where it landed. It's very hard to know which person used the firearm as the end user.

Primary effectit is the most accurate.