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CRIMINALISTICS

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Articles published in here arent mine. These are from my review notes when I was preparing for the licensure examinations in 2017.

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FORENSIC BALLISTICS (Part 4)

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by seventeentwentytwo

by seventeentwentytwo

Four Branches of Ballistics

1. Interior Ballistics
- treats the motion of projectile while still inside the firearm. It involves the following:
A. Firing pin hitting the primer
B. Ignition of the priming mixture.
C. Combustion of the gun powder
D. Expansion of the heated gas
E. Pressure developed
F. Energy generated
G. Recoil of the gun
H. Velocity of the bullet inside the barrel
I. Rotation of the bullet inside the barrel
J. Engravings of the cylindrical surface of the bullet.

2. ExteriorBallistics
- treats of the motion of projectile after leaving the muzzle of the gun barrel. Ans this involved the following:
   A. Muzzle blast
   B. Muzzle energy
   C. Trajectory
   D. Range
   E. Velocity
   F. Pull of gravity
   G. Air resistance

3. Terminal ballistics
- treats the effects of the impact of the bullet towards the target. And this involved the following:
A. Terminal accuracy
B. Terminal energy
C. Terminal penetration
D. Terminal velocity

FORENSIC BALLISTICS
- is the science of firearm identification by means of the ammunition fired through them. The terms forensic ballistics is sometimes used as another term for Firearms Identification.

Forum- (latin) "forensic" was derived from this word. It means "market place, where people gather for public disputation or public discussion.

SCOPE OF FORENSIC BALLISTICS
1. FIELD INVESTIGATION
- This is the work of the first officer on the case in the field. It is primarily a routine job of an investigating officer. Such work includes, recognition, collection, marking, prevention, packing and transmittal of ballistics exhibits.

2. TECHINICAL EXAMINATION OF THE BALLISTICS EXHIBITS
- This is the job being performed by the firearm identification examiner within the laboratory. It is extended to markings of evidences, test-firing evidences, photomicrography under the comparative chart, and final reports on the findings and observation of the firearms.