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