The negative impressions on the bearing surface of a bullet caused by the rifling in the barrel from which it was fired.
A. Lapping
B. Land and Groove impressions
C. Obturation
D. Parkerizing
Answer:B
The negative impressions on the bearing surface of a bullet caused by the rifling in the barrel from which it was fired.
A. Lapping B. Land and Groove impressions C. Obturation D. Parkerizing