A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
A
Accessory Rail A metal track for
mounting hand stops or slings, installed in the fore-end of the stock.
Letterlijke vertaling: Accesoire profiel. Geprofileerde metalen strip waar bepaalde accesoires aan kunnen worden bevestigd, bipod, riem, handstop, laser en dergelijke. Ook bekend als UIT rail, is bevestigd aan de voorkant van het wapen.
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Accuracy The
ability of a firearm to consistently
Group
all its shots close together at a given distance under optimal conditions.
Accuracy does not take into account human error or environment conditions.
Het vermogen van een wapen om op consistente wijze de pellet schot na schot op dezelfde plek op het doel te laten terechtkomen. Accuratesse wordt niet beinvloed door menselijk handelen of door weersinvloeden.
ASD - After Shoot Dip.
B Bead
Sight The cylindrical top part on some front sights. Ronde of afgeronde paalkorrel. Bedding The
fitting of the action with the stock. Passing van de actie in de kolf. Benchrest A
specifically designed support, e.g. a table (rest). http://www.luchtbuks.net/index.phpact=Atta...T> Bipod A
two-legged support attached to the fore-end of the stock. Bluing
The chemical treatment to color ferrous metal parts in various shades of
blue or black. Breaking
In A Barrel Process of initial use of a factory-new bore by firing
a certain number of shots and cleaning frequently. Breaking In the barrel
should be done before trying to attain good
Groups.
500 to 800 pellets are usually sufficient. Bullet
Drop The measure of a projectile's drop after the projectile
crosses the line of sight for the second time; beyond the zero or sighted-in
range. C Checkering A
diamond-like pattern in the stock for ornamentation or improved gripping. Cheekpiece A
raised part of the side of the stock of a shoulder-arm. CO2
Chemical formulae for carbon dioxide. Precharged pneumatic guns use a sear that
hits a valve releasing pressurized CO2 into the barrel and propels the bullet. D Diesel
Effect A detonation inside the pressure chamber when grease
evaporates and the resulting gases ignite, caused by the heating of the
compressed air in conjunction with the heat the piston seal generates while
moving along the chamber walls. The Diesel Effect is unpredictable and dreaded,
as its resulting excess recoil can easily damage scopes, even those which are
designed to take the
Spring Piston-specific
type of
Recoil. Drift Lateral
movement of a bullet away from the line of bore, caused by its rotation on its
axis, in the direction of the rifling twist. With airguns, drift is not a
significant value. Drop
at Comb The vertical distance from the line of sight to the comb,
or
Monte Carlo,
of the stock. It is measured from an extension of a straight line drawn from
the base of the front sight bead across the top surface of the open rear sight
adjacent to the notch. Drop
at Heel The vertical distance from an extended line of sight to the
heel of the stock. E F
Foot
Pound (ft/lbs) Unit of measurement for
Energy,
being the amount of energy required to lift a one pound weight one foot. G Grain
(gr.) Measure of weight applied to bullets. 1 grain equals 0.0648
grams. Grooves and
Lands
make the
Rifling
of a barrel. The grooves are the lowered areas between two lands. Group A
cluster of bullet holes made by the same airgun/pellet combination, formed from
numerous shots fired at a target using the same point of aim, for checking
accuracy. A 10-shot group provides useable statistics. Group
Size Usually measured center-to-center, the maximum distance
between the centers of the two farthest shots in a
Group. H J L Length
Of Pull The distance from the vertical center of the trigger to
the vertical center of the butt plate or
Recoil Pad. Lock
Time The time elapsing between the trigger release and a.) on
Pneumatic
and
CO2
airguns: the release of pressurized gases into the barrel; b.)
Spring Piston
airguns: the piston reaching the fore end of the pressure chamber. Since no one
can hold a firearm absolutely steady while shooting, the longer the Lock Time,
the higher the chances to inadvertently move the weapon before the bullet has
actually left the barrel. The
Recoil
can also greatly affect the
Point Of Impact
due to the Lock Time and
Barrel Time,
Spring Piston airguns have the highest Lock Time, one of the reasons why they
are excellent training weapons, as they force the shooter to pedantically apply
the rules of marksmanship. M Mid
Range Trajectory In its parabola-shaped path, the highest vertical
distance reached by a bullet above the line of sight. Mil Angular
unit of measurement used to estimate distance and size: 1 Milradian is 1/1,000
of the distance; 1 meter at 1,000 meters; 1 yard at 1000 yards. 360 degrees
consist of 6,400 Mils by military definition, 6283.2 mathematically. Minute
Of Angle (MOA) Angular unit of measurement used to describe the
Accuracy.
One MOA equals 1/60th of a degree (21,600 minutes in a complete revolution) and
subtends 1.0473 inches at 100 yards, or, as a rule of thumb, 1 inch at 100
yards. 1
Mil
contains 3.44 MOA. Monte
Carlo A
stock with a raised comb. N Ocular Also
known as the eyepiece. The magnifier lenses between the optical system and the
eye. Off-hand
Position A position in which the shooter stands upright, not
resting the rifle or his body on or against any supporting object. Open
Sight Rear sight of traditional open-topped V-notch or U-notch. P Pneumatic Precharged
air tank system. The sear hits a valve that releases pressurized air into the
barrel and propels the bullet. Point
Blank The shooting distance to which one can hit a specified
target area without modifying the
Point Of Aim.
The
Mid-Range Trajectory
and the
Bullet Drop
will both fall within the specified area. Point
Of Aim (POA) The point on a target on which the sights are
optically aligned. Point
Of Impact (POI) The point where the bullet hits. By adjusting the
sights, the point of impact can be made to coincide with the
Point Of Aim
at a preselected distance; hence we say the rifle/sight/pellet combination is
"zeroed" or "sighted in" at that range. Probability
Of Hit (POH) Refers to the chance (0 to 100%) that a given round
will hit the target at a given range, depending mainly on the gun's
Accuracy. Q Recoil The
rearward thrust caused by the propulsion of the piston or the bullet. Spring
piston airguns have also a very aggressive and powerful forward kick, caused by
the piston hitting the front end of the pressure chamber. It is this second
forward snapping that can damage even high-quality riflescopes. The recoil can
have be devastating to the system when the airgun diesels. See also
Diesel Effect. Recoil
Pad A rubber or leather pad at the end of the butt to absorb the
Recoil. Reticle In
scopes, the element which is optically referred to the target, consisting of
straight or tapered cross-hairs, dots, or other marks used to determine the
Point Of Aim,
size of, or range to the target. Rifle
Cant Any leaning of the rifle to one side from a vertical position
during firing, increasing the potential for misses, especially at longer
ranges. Rifling Twisted
Lands
and
Grooves
are placed into a barrel to impart spin on the bullets that pass through
it. Rifling
Pitch or
Rate of Twist
is the distance the
Rifling
needs to spin down the barrel for it to complete a single revolution. S Scope
Mounts Devices for mounting a scope to a rifle. Scope
Rail Machined grooves or rail to which the the
scope mounts
are attached. Sight-in The
sight adjustments to get the
Point Of Aim
to coincide with the
Point Of Impact
at a preselected distance. It is bets done by firing 3 to 5 shot groups between
each adjustment. Silencer A
device designed to muffle the sound of the discharging of pressurized gases
exiting the muzzle. See also
Suppressor
and
Sound Moderator. Spring
Piston The mechanical part within the pressure chamber that moves
forward under steel spring or gas spring pressure, compressing the air in the
chamber and pushing it into the barrel. The piston front consists of a sealing. Suppressor A
device designed to nearly totally absorb the sound of the discharging of
pressurized gases exiting the muzzle. It can also be an integral assembly with
the barrel. See also
Silencer
and
Sound Moderator. Sound
Moderator A device designed to moderate the sound of the discharging of
pressurized gases exiting the muzzle. See also
Suppressor
and
Silencer. Swivel The
attachment hook for the sling to the stock. T Trajectory The
path of a bullet in flight. As gravity causes a projectile to drop from the
moment it exits the muzzle, its trajectory is always curved in the shape of a
parabola. Trigger
Pull The force that must be applied to the trigger for it to
release the sear. A good Trigger Pull must be appropriately light, and the
release must be a clean, sharp snap. Turret The
housing for the adjustment of windage and elevation dials on riflescopes.
U W X NOTE Terms
and descriptions are related to airguns
Barrel Time The time elapsing between
the bullet starting to leave its seat until exiting the muzzle. Barrel Time and
Lock
Time
are significant, as they can greatly affect the
Point Of Impact.
Ook wel Locktime genaamd. De tijd tussen het overhalen van de trekker en het verlaten van de pellet van de loopmonding. Is van grote invloed op de POI (Point Of Impact).
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Caliber (cal) The numerical value of an
approximation of the bullet diameter in inches or millimeters.
DJV De Juiste Vetten.
Deflection The change in the path of
the projectile due to passing through a medium or caused by wind.
Energy Kinetic energy of a projectile. See
also
Foot-Pounds
and
Joules.
Het symbool
komt voort uit de Duitse wetgeving. In Duitsland zijn luchtdrukwapens niet vergunningplichtig, zo lang ze geen hogere mondingsenergie dan 7,5 Joule hebben. Dit staat gelijk aan ongeveer 5,5 ft/lbs. Daarboven is het wapen volgens de Duitse wetgeving WBK-plichtig. WBK = Waffen Besitz Karte (de vergunning dus).
Het symbool vind je op in Duitsland gekochte wapens welke aldaar niet vergunningplichtig zijn. Op wapens die in andere landen zijn gekocht en een lagere mondingsenergie hebben dan 7,5 Joule, hoeft het symbool dus niet voor te komen.
FAC
De afkorting FAC komt uit de Engelse wetgeving. In Groot-Brittannië geldt namelijk ook een maximale mondingsenergie voor luchtdrukwapens, alvorens een wapen vergunningplichtig wordt. De limiet in Groot-Brittannië ligt op 12 ft/lbs, oftewel ongeveer 16,3 Joule. Daarboven moet je een FAC hebben. FAC = Fire Arm Certificate (de vergunning dus).
Feet Per Second (ft/s) Unit of
measurement of the speed a projectile flies with. Also see
Meters Per Second
and
Velocity.
Girth The smallest circumferential dimension
at the pistol grip of a stock.
Hand Stop A device attached to the stock's fore-end to prevent the
supporting hand from sliding forward.
Joule (J) Unit of measurement for
Energy,
being the amount of energy required to lift a one pound weight about nine
inches.
Lands and
Grooves
make the
Rifling
of a barrel. The lands are the raised areas between two grooves.
Meters Per Second (m/s) Metrical
unit of measurement of the speed a projectile flies with. Also see
Feet Per Second
and
Velocity.
O
Objective The optical lens in
riflescopes that receives light and forms the primary image. The image is
magnified by the
Ocular.
Parallax The apparent movement of the
target in relation to the
Reticle
when the shooter moves his eye in relation to the ocular lens. When the
target's image is not focused on the same focal plane as the riflescope's
reticle, a parallax error is the result. For varmint shooters, improper
Parallax adjustment can easily make the difference between a hit and a miss.
R
Rate Of Twist or
Rifling Pitch
is the distance the
Rifling
needs to spin down the barrel for it to complete a single revolution.
Scope Creep An unwanted effect where
the
Scope Mounts
creep along the
Scope Rail.
During the firing cycle of
Spring Piston
powered gun, the piston bangs into the front end of the compression chamber,
making the entire gun to snap forward violently. There are systems that
eliminate scope creep for good.
Terminal Velocity The speed of
the projectile upon impact with the target.
V
Velocity The speed of a projectile,
measured in either
Feet Per Second
or
Meters Per Second.
Windage The adjustment on the scope or
open sights to compensate for horizontal
Deflection
of the bullet.
Y
Z
Zero The range at which the
Point Of Aim
and the
Point Of Impact
are identical. See also
Bullet Drop,
Trajectory.
