AMO Speed Rating
The Archery Manufacturer's
Organization set this standard for evaluating arrow speed. To discover
the AMO Speed, a bow is set at 60 pounds, with a 30-inch draw and shooting
arrows that weigh 540 grains. For today's compounds, speeds over 240fps
are considered fast while anything under 220fps is relatively slow.
You should draw the
bow and hold the string in the same location every time, anchoring the
bowstring. Many people who shoot with fingers use the corner of their mouth
as an anchor point.
Describes the movement
of the arrow as it bends and flexes around a riser upon release.
Placed on the arm
that holds the bow, an armguard protects your arm from getting "raspberries"
from the string hitting it. Some people use armguards to help hold baggy
shirts and jackets out of the way of the bowstring.
The notch at the end
of the arrow designed to fit around the bowstring.
The axles are the
shafts that a compound bow’s cams rotate on.
The distance from
one axle of a compound bow to the other. This is an important number because
it tells you two things: 1) Generally if you want a finger bow, it should
have an axle-to-axle length of at least 42 inches to avoid drastic finger-pinch.
2) A really short axle-to-axle length makes the bow more extreme and a
little more difficult to shoot but may make it faster.
An arrow tip that
is not pointed. Usually used to hunt small game or to stump shoot.
A device used to hold
the bow in a bent position so you can work on the bow or remove its string.
Today, pocket bow presses are inexpensive and portable. You should never
go on a hunt without one.
Used to measure brace
height or to align nocking points.
Is the length of a
direct line from the back of the grip to the string of a bow. Generally,
the lower the brace height, the faster the bow is. It is faster because
the shorter brace height means that the power stroke is longer. But because
a shorter brace height gives you a longer power stroke, it can be much
more difficult to shoot accurately.
Line of demarcation
between the old timber and the new growth. Deer "hold" to these breaklines
and use them as new scraping and rubbing areas. They use the breaklines
both in a parallel and perpendicular manner.
Arrow tips meant for
hunting big game. They generally feature at least one-inch of cutting diameter
and may be fixed blades or expandables (mechanicals).
For recurves and longbows,
these rubber round items are placed on a bowstring to keep brush from catching
in between the bowstring and the bow.
Holds the cables to
the side to ensure arrow clearance.
Fits on the cable
guard and helps the cables move smoothly across the cable guard. New Teflon
cable slides are said to add speed to your bow because they reduce the
friction so greatly. Pure Teflon is a clear or milky white color. If the
slide is not white, it's not Teflon.
The center portion
of the bowstring is wrapped (or served) to protect the bowstring from damage,
either from the release aid or from the string hitting the cable guard.
The point that places
the arrow shaft directly in line with the string grooves on compound eccentrics
or the center of the limb tips on recurves or longbows.
Clips or e-clips
Holds the axles in
When the arrow moves
away from the wall or your anchor point as you aim or get ready to release.
The colored designs
on the end of an arrow shaft. Cresting tools are available.
Cut to length
Arrow is cut to specified
length. Measured from bottom of nock to end of arrow shaft.
Design where limbs
or riser are angled toward the archer. Deflex designs are generally slower
but easier to shoot accurately than reflex designs
The distance at full
draw from the nocking point to the back of the grip. The AMO draw length
is the distance from the nocking point to a point 1 3/4 inches past the
back of the grip.
The amount of force
in pounds required to draw the bow.
The cam or the part
of the bow that is designed to control the stored energy of the bow.
The amount of kinetic
energy of the arrow just as it leaves the bow divided by the potential
energy that went into drawing it, multiplied by 100.
The plastic vane or
feather that are at the end of the arrow used to stabilize the arrow’s
The measure of weight
usually used when weighing arrows or arrow tips. 7,000 grains make a pound.
Refers to the way
fletching is laid on an arrow. Rather than straight, helical fletching
curves slightly around the arrow shaft.
IBO Speed Rating
Bowhunter's Organization has a speed rating that is generally measured
with a bow set at 70 pounds, 30-inch draw and shooting a 350-grain arrow.
Today's fastest bows will shoot over 310fps using the IBO rating.
The adapter which
is placed into a shaft to make a nock or arrow point fit the shaft. Outserts
are the opposite, they fit around the shaft. Some people believe outserts
make an arrow fly less true, but if all other factors are the same, outserts
shouldn't effect an arrow's flight much.
Kinetic Energy = (arrow
weight) / 450,800 x (arrow speed). Kinetic energy measures the level of
penetration your arrow possesses.
Allows you to anchor
consistently by placing the kisser on the bowstring and making sure it
touches the same part of your lips each draw.
Loop placed around
nocking point. This protects your string from being damaged by the release
aid but the downside is, it reduces speed slightly and some people find
it difficult to quickly attach their relase aid to it when "the big bucks
Location where arrow
sits on the bowstring.
Objects placed on
the bowstring used to keep the arrow in place and keep the nocking point
Used as the rear sight
of a gun is used. The peep sight is placed on or in the bowstring and the
sight pins and target are viewed through the peep. Sight pins should be
centered in the peep. Small peeps help you gain accuracy but don't let
a lot of light in. Hunters generally apt for larger diameter peeps.
Holds arrows. The
most popular for bowhunting is the bow-quiver which holds arrows on the
bow. But some say that makes the bow too heavy and makes it harder to hold
the bow steady in the wind. Other options are hip-quivers and back-quivers.
A bow design which
features limbs that bend away from the archer at the tips.
Features a grip which
is closer to the archer than the ends of the riser. This results in a short
brace height and a longer power stroke. Thus creating a faster bow but
generally more difficult to shoot than deflexed risers
The part of the riser
that is cut out and where the arrow rests.
Refers to the motion
of the bowstring after it is released. The longer it is, the faster the
arrow leaving it. But the longer the power stroke, the longer the archer
must hold steady after releasing the string.
Tool used to wrap
Rests which features
the arrow shaft sitting on the rest and as it is released it bends around
Shooters using release
aids use shoot-through rests. These feature two prongs holding the arrow
shaft. when the arrow releases, the cock vane flies through the two prongs.
Refers to the strength
of the arrow shat and its ability to resist bending and to recover after
bending or experiencing archer's paradox.
Placed on a bow for
the purpose of reducing torque and shock after releasing the arrow. Also,
it helps level out the bow and holds it steady prior to releasing.
To measure the tiller
is to measure the perpendicular distance from the bowstring to the points
where the riser and limbs meet. The tiller is the difference in these two
To turn the bow to
one side when aiming or releasing the arrow.
When at full-draw,
the area between a compound's wall and the point where the let-off ceases
to exist. Some people like a long valley because it allows you the freedom
to move a little at full draw without having your arm jerked, but others
want a short valley so they won't allow any creep.
Term used to describe
the back of the drawing motion of a bow. A solid or hard wall is when the
drawing motion comes to a sudden and precise end. If the back of the drawing
motion is nondescript, it is called a soft or mushy wall. A solid wall
is usually preferred because it makes it easier to anchor consistently.
Now, some bow companies offer a draw-stop that helps make the wall more
Archery glossary information
provided by Eder’s Bow.