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