A) Individual marks found only on fired bullets B) Features that develop after manufacturing through use C) Characteristics that change with each firing D) Properties determined before manufacture based on design specifications
A) 5 to 6 B) 7 to 8 C) 3 to 4 D) 2 to 3
A) Steyer Type B) Colt C) Carbine Type D) Smith and Wesson
A) 7 lands and grooves with groove width 3x land width B) 4 lands and grooves with equal width C) 5 lands and grooves with right twist D) 6 lands and grooves with left twist
A) Equal width B) Groove is three times wider C) Land is twice as wide D) Groove is twice as wide
A) Poor barrel alignment B) Contact with magazine lips C) Initial movement from chamber to barrel before rotation D) Excessive barrel wear
A) Perfect barrel alignment B) Near center of primer cup C) Worn-out rifling D) Normal firing conditions
A) Near center of primer cup B) At the cartridge mouth C) On the rim D) On the case body
A) Firing pin and breech face mark B) Magazine lip and chamber marks C) Chamber and shearing marks D) Ejector and extractor marks only
A) Magazine insertion B) Extraction process C) Backwards movement against breech face D) Forward movement of bullet
A) Individual markings from use B) Random imperfection from machining C) Properties determined before manufacture D) Feature that develop after manufacture
A) Direction of twist B) Number of land and grooves C) Bore diameter D) Wear pattern from regular use
A) Feature arising post- manufacture B) Design specifications C) Standard specification D) Predetermined by manufacturers
A) The caliber or gauge B) The pitch rifling C) The groove width D) The land elevation
A) Nine to ten B) Seven to eight C) Five to six D) Three to four
A) The elevated portion of the bore B) The space between grooves C) The depressed portions of the bore D) The complete barrel length
A) The rifling pitch B) The bore diameter C) The depressed portions between lands D) The elevated portion between lands
A) Subtracting groove width from circumference B) Adding all groove width C) Measuring the groove depth D) Measuring the bore diameter
A) The bore diameter measurements B) The distance for complete rifling turn C) The depth of the grooves D) The width of the lands
A) Several inches depth B) One centimeter deep C) One inch deep D) A few thousandths of an inch deep
A) Pitch of rifling B) Bore diameter C) Groove depth D) Land width
A) 3to8 B) 12to15 C) 1to3 D) 6to8
A) Standard measurements B) Pre-manufacturing decision C) Machine imperfection D) Original design specifications
A) The groove depth B) The groove width C) The rifling pitch D) The bore diameter
A) Aid in firearms identification B) Determine firing speed C) Indicate manufacturing D) Show wear pattern
A) Direction of twist B) Machine imperfection C) Number of groove D) Bore diameter
A) Impart spin to the bullet B) Decrease barrel wear C) Reduce recoil D) Increase barrel strength
A) Manufacturer specifications B) Design specifications C) Class characteristics D) Individual characteristics
A) An individual characteristics B) A usage pattern C) A class characteristics D) A post- manufacture feature
A) Mouth B) nose or ogive C) Nose D) Ogive
A) Firing pin Mark B) Shearing mark C) Magazine lip mark D) Extractor mark
A) Colt B) Carbine type C) Smith and Wesson D) Steyer type
A) Six B) Seven C) Four D) Five
A) Width ratio of grooves to lands B) All of the above C) Direction of twist D) Number of lands and grooves
A) Steyer type B) Carbine type C) Winchester D) Smith and Wesson
A) Seven lands and grooves , right twist B) Six land and grooves ,left twist grooves 3xwider than lands C) Four lands and grooves , right twist D) Six lands and grooves, left twist
A) 2:1 B) 4:1 C) 1:1 D) 3:1
A) Browning B) Webley C) Colt D) Winchester
A) Equal width B) Grooves are twice as wide as lands C) Grooves are three time winder than lands D) Lands are twice as wide as grooves
A) 6 lands and grooves , left twist B) 7 lands and grooves, right twist , grooves 3xwider wider than lands C) 7 lands and grooves , left twist D) 6 land and grooves , right twist
A) Smith and Wesson B) Carbine Type C) Browning D) Winchester
A) Marks from poorly aligned barrels B) Marks from forward movement in revolvers C) Depression caused by elevated portions of the bore D) Marks caused by the grooves of the barrel
A) Stripping marks B) Grooves marks C) Skid marks D) Land marks
A) Poor cylinder alignment B) Chamber irregularities C) Worn- on out D) Excessive barrel oiling
A) Rifles B) Automatic pistol C) Revolver D) Shotguns
A) Skid marks B) Slippage marks C) Stripping marks D) Shaving marks
A) On the case body B) Near center of primer cup C) On the extracting groove D) Near the rim
A) Forward movement of the bullet B) Backwards movement against breech face C) Ejection mechanism D) Magazine pressure
A) Extracting groove B) Rim cavity C) Case body D) Primer cup
A) Shearing marks B) Magazine lip marks C) Chamber marks D) Ejection marks
A) Testiary firing pin Mark B) Secondary firing pin mark C) Primary firing pin mark D) Auxiliary firing pin mark
A) Primer surface B) Extracting groove C) Two side of the rim D) Case body
A) Extractor movement B) Chamber wall irregularities C) Magazine pressure D) Firing pin impact
A) Magazine lip and chamber marks B) Ejector and extractor marks C) Land and grooves marks D) Shearing and stripping marks
A) Anterior portion B) Posterior portion C) Middle section D) Throughout the bullet
A) No specific correlation B) Half the number of land marks C) Twice the number of land marks D) The same number as land marks
A) Slippage occurs in oversized barrels,stripping in worn- out barrel B) Slippage occurs in clean barrels,stripping in dirty barrel C) Slippage occurs in rifles, stripping in revolvers D) Slippage occurs in new barrels, stripping old barrel
A) Extracting groove B) Rim cavity C) Center of primer D) Case body
A) Land and groove marks B) Firing pin and breech face marks C) Ejector and extractor marks D) Chamber and magazine marks
A) Corroded chamber walls B) Excessive oil in barrel C) Misaligned cylinder and barrel D) Worn - out rifling
A) Bullet deformation upon impact B) Manufacturing variation in ammunition C) Time elapsed since firing D) Environmental factors affecting the bullet
A) Powder residue patterns B) Overall shell length C) Shell case color D) Primer strike marks
A) Land and groove impression B) Bullet weight C) Bullet composition D) Ejector marks
A) Time difference between firings B) Different ammunition manufacturers C) Storage condition of shells D) Weather conditions during firing
A) Safety mechanism operation B) Barrel integrity C) Serial number condition D) Trigger mechanism functionality
A) Comparison microscope B) Chemical composition testing C) Weight measurements D) Digital imaging analysis
A) Similar oxidation pattern B) Similar gunpowder residue C) Same manufacturer marks D) Identical breech face marks
A) Firearms cleaning history B) Ammunition brand difference C) Lead fouling in the barrel D) Storage temperature
A) Bullet weight B) Bullet material composition C) Bullet diameter measurements D) Bullet color
A) Primer depth B) Extractions marks C) Case length D) Shell rotation patterns
A) Managing,authenticating ,and cataloging B) Mutilating,altering nature , and contaminating C) Moving ,arranging , and cleaning D) Marking,analyzing , and collecting
A) On the bullet circumstances only B) Along the bullets length C) At that nose ogive or base D) On the rifling marks
A) Outside,near the open mouth B) Inside near the open . Mouth C) On the firing pin impression D) On the body of the shell
A) Barrel, cylinder ,and frame B) Magazine ,slide ,and sight C) Trigger,hammer,and grip D) Chamber,stock and muzzle
A) Y B) O C) Z D) X
A) The recovering officer B) The lab technician C) The lead investigator D) The forensics specialist
A) On the exterior only B) On any visible surface C) On parts the can never be replaced D) On replaceable parts
A) Trigger guard B) Slide C) Magazine D) Hammer
A) Making temporary marks for identification B) Altering the evidence for better storage C) Using chemical cleaners to preserve evidence D) Making permanent marks with officer initials
A) To compare fired shell B) To measure bullet diameter C) To determine weight of bullets and pellets D) To examine barrel rifling
A) Simultaneously view two spicemen B) Measure bullet weight C) Only examine one bullet at at time D) Take photograph automatically
A) Internal barrel examinations B) Determining rifling pitch C) Measuring bullet weight D) Viewing large solid surface
A) It uses cotton for bullet recovery B) It measure barrel length C) It has multiple microscope lenses D) It determine bullet weight
A) Higher magnification capability B) Faster processing time C) Better measurements accuracy D) Reduced eye train due to screen projection
A) Water B) Ordinary cotton C) Steel plate D) Sand
A) Barrel length B) Bullet diameter C) Bullet weight D) Distance traveled in one complete rotation
A) Its used for weight measurements B) It's used for large measurements only C) It can only measure barrel length D) It's used for more precise measurements
A) Rifli pitch B) Barrel length C) Bullet diameter D) Shell casing length
A) Measure bullet diameter B) Compare fired bullet C) Determine bullet weight D) Examine internal barrel surface
A) Measuring rifling pitch B) Comparing fired shell C) Measuring bullet weight D) Determining bore diameter
A) 12 inches B) 39 inches C) 129inches D) 24inches
A) Comparison projector B) Micrometer C) Helicometer D) Taper gauge
A) Bullet weight B) Barrel length C) Class characteristics D) Bore diameter
A) Shadowgraph B) Taper gauge C) Helixometer D) Onoscope
A) 1/4 inches B) 1/2 inches C) 1/8 inches D) 1 inches
A) Stereoscopic microscope B) Helixometer C) Bullet comparison microscope D) Taper gauge
A) 120 inches B) 39 inches C) 24 inches D) 12 inches
A) Helixometer B) Caliper C) Onoscope D) Micrometer
A) Magnification capability B) Display method C) Specimen capacity D) Measurements accuracy |