| |
|
| Magnification |
Determining the magnification of a scope,
binocular and other optics can be confusing. For example
if a scope is listed as a 3-9x 50 this tells the shooter
that the scopes magnification is 3 times adjustable up to
9 times the magnification of the human eye's can normal
vision. the "50" tells the shooter the size of the
objective ( or the end facing the target) , in this case
it is 50mm. An alternate term for magnification is
"Power". |
| Mil Dot |
 The
Mil Dot is a range estimating reticle that was developed
for military applications and has taken a natural
progression into Law Enforcement and other precision rifle
shooting. The space between the dot centers subtend one
milliradian 6(Mil). One Mil subtends 3.6" at 100yards, or
36" at 1000 yards. |
| Minute of Angle |
Minute of Angle (MOA) is a term to
designate variances on a target at 100 yards distant. Most
commonly, it is used to describe the adjustment on a
scope. If a scope's adjustments are listed at ј" MOA, then
for every click of the adjustment knob, the bullet's point
of impact will move ј" at 100 yards. |
| |
|
| |
|
| Objective |
The objective is the end of the scope
facing the target. The size of the objective is in direct
correlation with the light gathering capability. In other
words the larger the objective, the more light entering
the scope which usually offers the shooter a clearer
image. To determine the size of the optics objective from
the description is easy. For example a 2-7x 42 refers to a
2x to 7x magnification with a 42mm objective. |
| Optical Coatings |
Optical coatings are multiple ultra
coating of a chemical film (commonly Magnesium Fluoride)
to eliminated much of the reflection. The coating
reduces light loss and glare, increasing light
transmission and resulting in brighter, clearer images. By
coating a surface with multiple films, the effect of the
coating is increased, at times limiting the amount of
reflected light to 0.25% to 0.5% per glass surface. |
| P4 Sniper Reticle |
 The
NcStar P4 Sniper reticle is a modified version of the
Mil Dot with a little of the
Rangefinder reticle thrown in. Specially designed
Reticle to estimate range with quickness and accuracy
using a simple mathematical formula. |
| Parallax |
A condition that occurs when the image of
the target is not focused precisely on the reticle plane.
Parallax is visible as an apparent movement between the
reticle and the target when the shooter moves his head or,
in extreme cases, as an out-of-focus image. Bushnell
center-fire riflescopes under 11x are factory-set
parallax-free at 100 yards; rim-fire and shotgun scopes at
50 yards. Scopes of 11x or more have a special range focus
to adjust for parallax. |
| Plex Reticle |
 Standard
plex Reticle gives the shooter a more natural acquisition
between the Reticle and the target. If a simple crosshair
style reticle with thick crosses narrowing down to medium
width targeting crosshairs. |
| Power |
The "power" of an optic is the same as the
" magnification" of scopes, binoculars and all other
optics. Both terms are simply express the factor to which
the optic sees greater than the naked eye. For example a
2-7x 32 optic indicates that the operator is able to bring
the target closer |
| |
|
| |
|
