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APLR FFP IR MOA
2 3
The ATHLON® APLR FFP IR MOA Reticle
APLR FFP IR MOA reticle has a large illuminated center with 1 moa hash
mark increments and drop lines in 5 moa increment on vertical direction
down to 50 moa, both of which help you quickly lock in your target and
set holdover positions. The illuminated portion has a 2 moa center cross
(1moa from center to each side) with illuminated cross line extends to 40
moa on both vertical (50 moa down below) and horizontal direction. The
drop lines have smaller dots with 1 moa in between and bigger dots at each
5 moa interval, starting 10 moa length horizontally and end up 60 moa in
length at the 50 moa drop line. The illuminated reticle provides excellent
low light visibility and accurate elevation holdovers all the way up to 50
moa with 1 moa markings increment. The unique design of having drop
lines going down to 50 moa with 5 moa between each drop line and 1 moa
hash marks in between provide excellent holding over positions for long
precision shooting.
Application: Precision Mid Range Shooting for both Tactical and Hunting
Note: The reticle image shown above will appear differently among different
models due to different magnification and location of the reticle.
4 5
Reticle Subtensions
The APLR FFP IR MOA reticle is based on the minute of angle, a unit of an-
gular measurement, usually shortened to moa. A “moa” is defined as “one
minute of an angle”. As a full circle has 360 degrees, and each degree is
composed of 60 minutes (60’). thus there are 360 (degrees) x 60 (minutes)
= 21,600 minutes in a circle. Since there are 360 degree in a circle, we
can get 360 degree/21600 minutes=0.016667o/ minute. If the target is
100 yards ( 3600 inches) away, we can use a formula, 3600*TAN(RADI-
ANS (.016667 )), to get 1.047 inches which means 1 moa equals to 1.047
inches at 100 yards. Many people just round up the 1.047 inches to 1 inch
@100 yards. If you are using metric system, formula 100000mm*TAN (RA-
DIANS(.01667)) gets you that 1 moa equals to 29.1mm @100 meters.
The APLR FFP IR MOA reticle is located at the focal plane in the front of the
erector tube which is a key part of achieving variable power inside the rifle-
scope. Size of the first focal plane reticle grows or shrinks at the same ratio
with the changing size of the image of your target when you try to zoom
in or zoom out. Since the size of the reticle remains constant compared to
your target regardless of the magnification, the subtension of the reticle
remains valid all the time. The reticle at 4.5x actually becomes a center
cross for effectively engaging shorter range targets while at 29x or other
high power settings it provides finer details for a shooter to locate proper
hold over positions for long range targets.
Example
A1 A2 B1 B2 B3 B4 C1APLR FFP IR MOA
SUBTENSIONS IN MOA .14 2 1 .5 1.5 2 1
C2 C3 C4 C5 C6 D1 D2
1 2 5 1 5 .2 .3
6 7
Distance Ranging
Equations for ranging distance to a target using moas
As the height of target and moa reading on the reticle are two key variables
in this equation, you have to get an accurate value for those two as much
as possible. First all you want to put your ri le on a steady rest so you can
get an accurate reading of the target height on the reticle. If needed
using the smallest measurement on the reticle to get the most accurate
readings. Second use your best knowledge on the height of the target,
such as 72 inch high fence or 45 inch shoulder high of white tail deer, to
give a value of the target height. Once you got the reading on reticle and
your estimate of the target height, you can just simply use above
equations to calculate the distance to your target.
Example
Reading a 3-foot target (36 inches) at 6 moas gives 600 yards
Height of Target (Inches) x 100
MOA Reading on Reticle
= Distance to Target (Yards)
36 inches x 100
6 moas
= 600 yards
Height of Target (CM) x 34.4
MOA Reading on Reticle
= Distance to Target (Meters)
8 9
Holdover For Compensating Bullet Drop
To be able to use the elevation holdovers effectively, you have to know
the distance to your target and bullet trajectory (bullet drop in inches or
moas). Since many bullet ballistic charts highlight bullet drops in inches and
1moa equals to 1.047 ( rounded up to 1 inch) at 100 yards, 2 inches at 200
yards, and 10 inches at 1000 yards, etc, we can use those to calculate the
holdover position in moa on this reticle.
For example, under no wind condition, if you knew your target is at 300
yards and your ammo has a 12 inch bullet drop at that distance, you want
to use 4 moa holdover point. Here is how you got the 4 moa: since 1 moa
equals to 1 inch x 3 = 3 inches at 300 yards, and then 4 moas equal to 4 x
3 inches =12 inches at 300 yards, you want to hold the 4 moa drop point
to compensate the 12 inch bullet drop.
To achieve ultimate precision, it is always a better idea to develop your
own D.O.P.E (Data of Previous Engagement )chart so that you can refer
back to it for specific bullet drop compensation under different ambient
environment and weather condition.
Example
10 moa /60 inch holdover for a target at 600 yards out. No wind.
10 11
Holdover for Wind Correction and Moving Target
The APLR FFP IR MOA reticle again has 1 moa mark increment both verti-
cally and horizontally from the 2 moa center cross which can help you set
your holdover positions to compensate wind correction and hold the lead
for a moving target.
The flying time of a bullet, the velocity and direction of the wind and the
“slippery-ness” of the bullet expressed in BC (Ballistic Coefficient) deter-
mine your holdover for wind correction. Once again you have to understand
the impact of those three factors on your bullet’s flying path in terms of
inches or mils and calculate how much holdover you have to hold, and then
finding the corresponding holdover position on the reticle is a much easier
task to accomplish.
Example
6 moa wind correction for 10 mph wind from right to left at 600 yards. Elevation
turret has been dialed up to compensate bullet drop, just simply use center hori-
zontal cross line to holdover for wind correction
Use visual cross point for wind correction and bullet drop
As an alternative, you can use a virtual cross point formed by hash marks
on both horizontal and vertical cross lines to holdover bullet drop and
wind correction.
Hold lead correction for a moving target
Distance to your target, moving speed of your target, bullet flying time,
wind direction are the key factors that determine how much holdover you
need to hold for a moving target. As a rule of thumb, you always hold the
lead for the net distance of your target moved ( add or subtract holdover
for wind correction) during the time span your bullet traveled.
5.9 moa lead holdover for a moving target traveling at 2 mph from left to right at
600 yards. Bullet flight time is 1 second during which the target traveled 2.94 feet.
No wind.
Use 10 moa for 60 inch bullet drop for a target at 600 yards, 6 moa wind correction
for 10 mph wind from right to left.
12 13
Example Example
THE ATHLON GOLD MEDAL LIFETIME WARRANTY*
Your Athlon product is not only warranted to be free of defects in materials
and workmanship for the lifetime of the product. Athlon will also repair or
replace, at no charge to you, your product if you should damage it through
normal use. No receipt is needed, no registration is required. This is a com-
mitment that Athlon Optics will be the best product you can buy for your
money.
*This warranty does not cover damages caused by deliberate damage, misuse,
theft or maintenance provided by someone other than the Athlon
Authorized Service Department.
14 15
Reticle Manual Athlon Cronus APLR FFP IR MOA Optics Trade

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Reticle Manual Athlon Cronus APLR FFP IR MOA Optics Trade

  • 2. 2 3 The ATHLON® APLR FFP IR MOA Reticle APLR FFP IR MOA reticle has a large illuminated center with 1 moa hash mark increments and drop lines in 5 moa increment on vertical direction down to 50 moa, both of which help you quickly lock in your target and set holdover positions. The illuminated portion has a 2 moa center cross (1moa from center to each side) with illuminated cross line extends to 40 moa on both vertical (50 moa down below) and horizontal direction. The drop lines have smaller dots with 1 moa in between and bigger dots at each 5 moa interval, starting 10 moa length horizontally and end up 60 moa in length at the 50 moa drop line. The illuminated reticle provides excellent low light visibility and accurate elevation holdovers all the way up to 50 moa with 1 moa markings increment. The unique design of having drop lines going down to 50 moa with 5 moa between each drop line and 1 moa hash marks in between provide excellent holding over positions for long precision shooting. Application: Precision Mid Range Shooting for both Tactical and Hunting Note: The reticle image shown above will appear differently among different models due to different magnification and location of the reticle.
  • 3. 4 5 Reticle Subtensions The APLR FFP IR MOA reticle is based on the minute of angle, a unit of an- gular measurement, usually shortened to moa. A “moa” is defined as “one minute of an angle”. As a full circle has 360 degrees, and each degree is composed of 60 minutes (60’). thus there are 360 (degrees) x 60 (minutes) = 21,600 minutes in a circle. Since there are 360 degree in a circle, we can get 360 degree/21600 minutes=0.016667o/ minute. If the target is 100 yards ( 3600 inches) away, we can use a formula, 3600*TAN(RADI- ANS (.016667 )), to get 1.047 inches which means 1 moa equals to 1.047 inches at 100 yards. Many people just round up the 1.047 inches to 1 inch @100 yards. If you are using metric system, formula 100000mm*TAN (RA- DIANS(.01667)) gets you that 1 moa equals to 29.1mm @100 meters. The APLR FFP IR MOA reticle is located at the focal plane in the front of the erector tube which is a key part of achieving variable power inside the rifle- scope. Size of the first focal plane reticle grows or shrinks at the same ratio with the changing size of the image of your target when you try to zoom in or zoom out. Since the size of the reticle remains constant compared to your target regardless of the magnification, the subtension of the reticle remains valid all the time. The reticle at 4.5x actually becomes a center cross for effectively engaging shorter range targets while at 29x or other high power settings it provides finer details for a shooter to locate proper hold over positions for long range targets. Example A1 A2 B1 B2 B3 B4 C1APLR FFP IR MOA SUBTENSIONS IN MOA .14 2 1 .5 1.5 2 1 C2 C3 C4 C5 C6 D1 D2 1 2 5 1 5 .2 .3
  • 4. 6 7 Distance Ranging Equations for ranging distance to a target using moas As the height of target and moa reading on the reticle are two key variables in this equation, you have to get an accurate value for those two as much as possible. First all you want to put your ri le on a steady rest so you can get an accurate reading of the target height on the reticle. If needed using the smallest measurement on the reticle to get the most accurate readings. Second use your best knowledge on the height of the target, such as 72 inch high fence or 45 inch shoulder high of white tail deer, to give a value of the target height. Once you got the reading on reticle and your estimate of the target height, you can just simply use above equations to calculate the distance to your target. Example Reading a 3-foot target (36 inches) at 6 moas gives 600 yards Height of Target (Inches) x 100 MOA Reading on Reticle = Distance to Target (Yards) 36 inches x 100 6 moas = 600 yards Height of Target (CM) x 34.4 MOA Reading on Reticle = Distance to Target (Meters)
  • 5. 8 9 Holdover For Compensating Bullet Drop To be able to use the elevation holdovers effectively, you have to know the distance to your target and bullet trajectory (bullet drop in inches or moas). Since many bullet ballistic charts highlight bullet drops in inches and 1moa equals to 1.047 ( rounded up to 1 inch) at 100 yards, 2 inches at 200 yards, and 10 inches at 1000 yards, etc, we can use those to calculate the holdover position in moa on this reticle. For example, under no wind condition, if you knew your target is at 300 yards and your ammo has a 12 inch bullet drop at that distance, you want to use 4 moa holdover point. Here is how you got the 4 moa: since 1 moa equals to 1 inch x 3 = 3 inches at 300 yards, and then 4 moas equal to 4 x 3 inches =12 inches at 300 yards, you want to hold the 4 moa drop point to compensate the 12 inch bullet drop. To achieve ultimate precision, it is always a better idea to develop your own D.O.P.E (Data of Previous Engagement )chart so that you can refer back to it for specific bullet drop compensation under different ambient environment and weather condition. Example 10 moa /60 inch holdover for a target at 600 yards out. No wind.
  • 6. 10 11 Holdover for Wind Correction and Moving Target The APLR FFP IR MOA reticle again has 1 moa mark increment both verti- cally and horizontally from the 2 moa center cross which can help you set your holdover positions to compensate wind correction and hold the lead for a moving target. The flying time of a bullet, the velocity and direction of the wind and the “slippery-ness” of the bullet expressed in BC (Ballistic Coefficient) deter- mine your holdover for wind correction. Once again you have to understand the impact of those three factors on your bullet’s flying path in terms of inches or mils and calculate how much holdover you have to hold, and then finding the corresponding holdover position on the reticle is a much easier task to accomplish. Example 6 moa wind correction for 10 mph wind from right to left at 600 yards. Elevation turret has been dialed up to compensate bullet drop, just simply use center hori- zontal cross line to holdover for wind correction
  • 7. Use visual cross point for wind correction and bullet drop As an alternative, you can use a virtual cross point formed by hash marks on both horizontal and vertical cross lines to holdover bullet drop and wind correction. Hold lead correction for a moving target Distance to your target, moving speed of your target, bullet flying time, wind direction are the key factors that determine how much holdover you need to hold for a moving target. As a rule of thumb, you always hold the lead for the net distance of your target moved ( add or subtract holdover for wind correction) during the time span your bullet traveled. 5.9 moa lead holdover for a moving target traveling at 2 mph from left to right at 600 yards. Bullet flight time is 1 second during which the target traveled 2.94 feet. No wind. Use 10 moa for 60 inch bullet drop for a target at 600 yards, 6 moa wind correction for 10 mph wind from right to left. 12 13 Example Example
  • 8. THE ATHLON GOLD MEDAL LIFETIME WARRANTY* Your Athlon product is not only warranted to be free of defects in materials and workmanship for the lifetime of the product. Athlon will also repair or replace, at no charge to you, your product if you should damage it through normal use. No receipt is needed, no registration is required. This is a com- mitment that Athlon Optics will be the best product you can buy for your money. *This warranty does not cover damages caused by deliberate damage, misuse, theft or maintenance provided by someone other than the Athlon Authorized Service Department. 14 15