Turut berduka atas tewasnya kei brother dengan headshot point-blank pada jarak 3meter. pelaku adalah si Petrus yang banyak diberitakan media. semoga amal ibadah diterima disisinya.

yang ane ingin bahas bukan kasus tersebut melainkan istilah point blank itu sendiri. terinspirasi dari judul status mr mario teguh hari ini. dan arti dari permainan tembak tembakan yg cukup terkenal itu, mungkin banyak yang belum ngeh artinya. ya cuma mau share aja sbb.

In external ballistics, point-blank range is the
distance between a firearm and a target of a
given size such that the bullet in flight is
expected to strike the target without adjusting
the elevation of the firearm. The point-blank
range will vary with the firearm and its
particular ballistic characteristics, as well as
the target chosen. A firearm with a flatter
trajectory will permit a farther maximum
point-blank range for a given target size, while
a larger target will allow for a longer point-
blank range for a given firearm.[1]
In forensics and popular usage, point-blank
range has come to mean extremely close
range (i.e., target within about a meter (3 ft)
of the muzzle at moment of discharge but not
close enough to be an actual contact shot). [1]
History of the term
The term point-blank range is of French origin.
The center of a target was once a small white
spot and the French for white is blanc. The
term therefore means "aim at the white point
in the center of the target". Point-blank range
is the distance a marksman can reasonably
expect to fire a specific weapon hitting a
specific target without further adjustment of
the fixed sights. A marksman should be able to
hit the target every time at point-blank range,
providing there are no deficiencies in the
weapon, ammunition or marksman. Note: It is
essential that the point-blank range with
designated ammunition be determined by the
manufacturer, by fixed stand testing to have a
true determination of a specific weapon's
"point-blank range". The military does it by
testing and retesting.
The term originated with the techniques used
to aim muzzle loading cannon. The barrels of
the cannon tapered down from breech to
muzzle, so that when the top of the cannon
was held horizontal, the bore actually sat at an
elevated angle. In addition, the firing of the
gun caused the muzzle to elevate slightly due
to recoil, and this would result in an upward
movement of the shot even in a cylindrical
cannon. This caused the bullet or shot or
cannon ball to rise above the natural line of
sight very soon after leaving the muzzle, and
later dropping below the line of sight due to
the curved trajectory of the projectile. [2]
By firing a given projectile and charge in the
cannon, the distance at which the shot fell
below the bottom of the bore could be
measured. This distance was considered the
point-blank range. Any target within the point-
blank range required the gun to be depressed;
any target beyond the point-blank range
required the gun to be elevated, up to the
angle of greatest range, which happens
somewhat before 45 degrees of elevation.[2]
The point-blank range varies significantly with
not only the ballistics of the gun, but also its
shape, as it is shape that determines the
natural line of sight on which point-blank
range is based. Various cannon of the 19th
century had point-blank ranges from 250 yards
(12 lb howitzer , 0.595 lb (0.270 kg) powder
charge) to nearly 1075 yards (30 lb carronade ,
solid shot, 3.53 lb (1.60 kg) powder charge).
[2]
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Small arms and maximum point-blank range
Small arms are often sighted-in so that the
sight line and bullet path are within a certain
acceptable margin out to the longest possible
range, called the maximum point-blank range .
The range of distance inside the maximum
point-blank range is greatly dependent on the
external ballistics of the cartridge in question;
high velocity rounds have long point-blank
ranges, while slow rounds have much shorter
point-blank ranges. Other factors in the blank
range are the target size (which determines
how far above and below the line of sight the
trajectory may deviate), the height of the
sights, and an acceptable drop before a shot is
ineffective.[3]
Maximum point blank range for hunting
A large target, like the vitals area of a deer ,
allows a deviation of a few inches (as much as
10 cm) while still ensuring a quickly disabling
hit. A varmint such as a prairie dog requires a
much smaller deviation, less than an inch
(about 2 cm). [4] The height of the sights has
two effects on point blank range. If the sights
are lower than the allowable deviation, then
point blank range starts at the muzzle, and any
difference between the sight height and the
allowable deviation is lost distance that could
have been in point blank range. Higher sights,
up to the maximum allowable deviation, push
the maximum point blank range further from
the gun. Sights that are higher than the
maximum allowable deviation push the start of
the point blank range farther out from the
muzzle; this is common with varmint rifles ,
where close shots are only sometimes made, as
it places the point blank range out to the
expected range of the usual targets.
Maximum point-blank range for military
use
This sight setting for maximum point-blank
range is also referred to in the military as
Battle Zero. Soldiers are instructed to fire at
any target within this range by simply placing
the sights on the center of mass of the enemy
target. Any errors in range estimation are
tactically irrelevant, as a well-aimed shot will
hit the torso of the enemy soldier. The current
trend for elevated sights and higher-velocity
cartridges in assault rifles is in part due to a
desire to extend the maximum point-blank
range, which makes the rifle easier to use.