Breachface Markings Can Be Found on the

Q12: Caliber is used to describe the length

Q13: The land impression impressed in a fired

Q14: Shotguns contain rifling in their barrel.

Q15: Cutting the barrel of a gun with

Q16: A tool mark is a microscopic marking

Q18: The deposition of gunshot residue (GSR) at

Q19: Mercury fulminate was discovered in 1807 by

Q20: Firearms identification rarely involves tool mark analysis.

Q21: Water tanks are short, narrow and shallow

Q22: Grooves are dug into a barrel in<br>A)