Sdi Basic Ballistics (Bbs 100) Questions And Answers

SDI BASIC BALLISTICS (BBS 100)
QUESTIONS AND ANSWERS
Ingagcrosswindgofg10gmilesgperghour,gag.22LRgbullet,gwithgagmuzzlegvelocitygof
g1335gfpsgwillgbegblowngdownwindghowgmanyginchesgatg100gyds?g-gans-
5gInches

WhatgwasgthegearlygGreekgtermgforgballistics,gmeaningg"togthrow"?g-gans-Ballein

Thegrealmgofginteriorgballisticsgextends:g-gans-
FromgthegBreechgofgthegGungtogthegMuzzle

Thegforwardgspeedgofgagbullet,gusuallygspecifiedgingfeetgpergsecond,gisgcalled:g
-gans-Velocity

Onegofgthegmoregconvenientgdevicesgforgdetermininggbulletgdropgisgthe:g-gans-
PowleygHighgVelocitygChart

Asgthegstudygofgballisticsgprogressed,gthegfieldgofgballisticsgwasgbrokengintogtwo
gdifferentlygphases:g-gans-InteriorgandgExteriorgBallistics

Thegrealmgofgthegexteriorgballisticsgextends:g-gans-FromgMuzzlegtogthegTarget

HeaviergBullets:g-gans-SustaingtheirgVelocityglongergthanglightergones

True/False:gEveryggungthisgisgfiredghasgrecoil.g-gans-True

Thegraisedgportiongingthegbore,gbetweengtwogadjacentggroovesgisgcalled:g-gans-
Land

Thegpressuregexertedgongthegchambergwallsgwhengagcartridgegisgfiredgisgcalled:
g-gans-BreechgPressure

Matchgthegfollowinggballisticgterms:
1.gBuckshot:
2.gCenterfire:
3.gEnergy:
4.gRifling:
5.gTrajectory:
6.gPressure:
7.gOgive:

, 8.gFoot/Pound:g-gans-1.gLargegleadgpelletsgusedgingshotgshells
2.gRefersgtogagcentrallyglocatedgprimer.gMostgaregreloadable.
3.gAmountgofgworkgcapablegofgbeinggdonegbygagprojectilegFoot/Pounds
4.gParallelgspiralggroovesgcutgintogthegbore
5.gThegpathgofgthegprojectilegingflight
6.gThegpressuregexertedgbygagburninggchargegofgpowdergingtheggun.gExpressed
gbygPSI.
7.gRadiusgofgthegcurvegofgthegbulletgnose,gusuallygexpressedgingcalibers
8.gUnitgofgKineticgEnergygtograiseg1glbgupg1gftgagainstgnormalggravity.

Ingag______________gcartridge,gthegprimergisglocatedgingagsmallgwall,gorgdepre
ssion,gingthegcentergofgthegcaseghead.g-gans-Centerfire

Eachgcartridgegisgmadegupgofg4gbasicgparts:g-gans-
Case,gPrimer,gPowder,gBullet

Ag____________gisgthegtermgusedgingmeasuringgbulletgdispersiong(1"g@g100gy
ds)g-gans-MinutegofgAngle

Riflinggconsistsgof:g-gans-LandsgandgGroovesgcutgingagRiflegBarrel

True/
False:gUndergpressuregofgthegpowderggas,gabdurationgtakesgplace,gingwhichgthe
gcasegexpandsgagainstgthegmagazinegwall,gmakinggagsemi-
rigidgsealgandgpreventingggasgfromgescapinggtogthegsidesg-gans-False

Ballisticsgdealgwith:g-gans-ThegSciencegofgMovinggProjectiles

Trajectorygisgbestgdescribedgas:g-gans-
ThegPatterngandgCurvedgPathgofgagBulletgingFlight

Bulletgenergygisgnormallygexpressedgin:g-gans-Foot/Pounds

Thegfollowingglinegdrawinggdepictsgonegofgthegfirstgsuccessfulgrimlessgcartridgeg
designsgingAmericangHistory.gWhatgisgthegnamegofgthisgcartridge?g-gans-
6MMgLeegNavy

Agcenterfiregcartridgegusesgagsmallgexplosivegdevicegcalledga:g-gans-Primer

Whatgisgthegmaingpurposegofgusinggagwadgcuttergbullet?g-gans-TargetgPractice

Whatgcomponentsgmadegupgthegfirstgmuzzleloadinggcartridges?g-gans-
PowdergandgLeadgBallgWrappedgingPaper

Theg8x57mmgCartridge-gdevelopedgingEuropeg-
gisgalsogknowngasgtheg______________gingAmerica.g-gans-8MMgMauser