Introduction to H4H
The H4H eScore target is a next generation electronic target based on acoustic sensors. It works with supersonic ammunition, but will detect projectiles even as they go subsonic. It is designed to be used for 200-600 m/yds shooting ranges, particularly suited for long range shooting.
Features of the H4H target
- 4 acoustic sensors, one in each corner of the target, for optimal scoring accuracy.
- Easy-swap sensor system - repairs done in seconds.
- Closed chamber acoustic detection system, unaffected by weather conditions.
- Several different target faces available.
- Guide pin design allows swift change of target face, without need for subsequent zero point alignement.
Technical specifications and dimensions
A |
1822 mm |
|
B |
1826 mm |
|
C |
559 mm |
|
D |
305 mm |
|
E |
80 mm |
|
F |
40 mm |
|
G |
95 mm |
|
H |
164 mm |
Below are target leg dimmensions, referenced by the lower part of the service panel:
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Note!
Please note that the target legs are made of hollow aluminium profile, perfectly strong and suitable for mounting to most materials. Aluminium is known to cause corrotion to steel, if steel and aluminium are joined together. Consider using anti-corrosive bolts or screws if put through target legs. Always use washers behind screw head.
Warning!
The hollow target legs contain sensor cables and connectors. Pull those out of the leg, if making holes to the legs or putting screws trough.
| Temperature range | -30 to +60 °C |
| Weight | ~ 76 kg |
| Power consumption | ~ 4.4 W @ 24 VDC |
| Calibers | Primarily intended for supersonic projectiles like .223, .308, 30-06, 6.5mm, 6mm, but will detect projectiles even as they go subsonic. |
Exploded view and parts list
200-600m/yds target setup
Below is an exploded view of the components used for the H4H eScore target. This setup is one of two options, mainly intended for use up to 600m/yds range.
| Item | Product name | KTS part no. |
| 4 | Target model H4H | 13020167 |
| 8 |
Female I/O cable → Amphenol → M23 |
- 13020210 13020191
|
| 9 |
Male I/O cable → Amphenol → M23 |
- 13020209 13020190 |
| 10 |
Guide pins (6pcs) → non threaded centre → headed, non threaded center (*Note1) |
- 97020850 97020845 |
| 11 | Small temperature shields (2pcs) | 13020112 |
| 12 | P00 temperature shield (rear) | 13020113 |
| 14 | Top cover | 97020351 |
| 15 | Guide pin nuts (typ 12pcs) | 97020729 |
| 16 |
Easy-swap sensor bracket: Upper left corner Upper right corner |
- 13 02 0189 13 02 0195 |
| 18 | X-rubber | 13020218 |
| 26 | P100 temperature shield (front) | 13020114 |
| 27 |
FX target face → Ø36'' → Ø36'' with velcro (*Note2) → FC 1000yd (printed) → Ø19'' → Ø13'' → Ø6.35'' → Ø60cm → USMC Threat Halo (printed) → USMC Dog Target (printed) |
- 13020083 13020201 13020265 13020162 13020163 13020173 13020301 13020289 13020318 |
Note1: This guide pin will cause challenges to install X-rubber at one side of the target. The other guide pin is recommended.
Note2: This target face is used in combination with following printed taget faces (attached with velcro):
| Description | KTS part no: |
| Aiming mark 200yd USA NRA SR | 13 02 0223 |
| Aiming mark 300yd USA NRA SR-3 | 13 02 0224 |
| Aiming mark 600yd USA NRA MR-1 | 13 02 0225 |
| Aiming mark 300yd USA F-class | 13 02 0262 |
| Aiming mark 500yd USA F-class | 13 02 0263 |
| Aiming mark 600yd USA F-class | 13 02 0264 |
200-1000m/yds target setup
Below is an exploded view of the components used for the H4H eScore target. This setup is one of two options, suitable for rifle ranges up to 1000m/yds.
| Item | Product name | KTS part no. |
| 1 | Target model H4H | 13020215 |
| 4 | Target rubber skin (2pcs) | 97020426 |
| 8 |
Female I/O cable → Amphenol → M23 |
- 13020210 13020191
|
| 9 |
Male I/O cable → Amphenol → M23 |
- 13020209 13020190 |
| 10 |
Guide pins (6pcs) → non threaded centre → headed, non threaded center (*Note1) |
- 97020850 97020845 |
| 11 | Small temperature shields (2pcs) | 13020112 |
| 12 | P00 temperature shield (rear) | 13020113 |
| 14 | Foam temperature shields (3pcs) | 13020288 |
| 15 |
FX target face → Ø36'' with velcro (*Note 2) → FC 1000yd (printed) → USMC Threat Halo (printed) → USMC Dog Target (printed)
Customized on request. |
13020201 13020265 13020289 13020318 |
| 16 | Top cover | 97020351 |
| 17 | Guide pin nuts (typ 12pcs) | 97020729 |
| 20 | X-rubber | 13020218 |
|
Easy-swap sensor bracket: → Upper left corner → Upper right corner |
- 13 02 0189 13 02 0195 |
Note1: This guide pin will cause challenges to install X-rubber at one side of the target. The other guide pin is recommended.
Note2: This target face is used in combination with following printed taget faces (attached with velcro):
| Description | KTS part no: |
| Aiming mark 200yd USA NRA SR | 13 02 0223 |
| Aiming mark 300yd USA NRA SR-3 | 13 02 0224 |
| Aiming mark 600yd USA NRA MR-1 | 13 02 0225 |
| Aiming mark 300yd USA F-class | 13 02 0262 |
| Aiming mark 500yd USA F-class | 13 02 0263 |
| Aiming mark 600yd USA F-class | 13 02 0264 |
Target rubbers
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The target is fitted with a target rubber skin (both at the front of the target frame and at the back) and a X-rubber to obtain a soundproof measuring chamber in between. The target rubber skin at front of the target is fitted with a Ø60cm (Ø24'') hole in the centre section, to reduce wear affecting scoring accuracy.
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To keep a sound proof measuring chamber, and ease maintenance, the target is fitted with a X-rubber. The X-rubber is hung at four fixation pins as illustrated, and the rubber sheet of the X-rubber should always touch and cover the hole in the target rubber skin.
When the rear target rubber skin get coin-sized holes by wear, the rear target rubbes skin should also get prepared with a Ø60cm (Ø24'') cut-out. Keep in mind that the target rubber skin is stretched when mounted to the target, and that the cut-out will be larger than a guide mark. We suggest Ø58cm (Ø23'') guide mark.
Worn X-rubbers should always be put at the back of the target (touching rear target rubber skin) to cover holes in the rear target rubber skin - when new X-rubbers are put at the front of the target. The quality of the X-rubber and target rubber skin, particularly in front of the target, are of major concern in maintaining scoring accuracy.
Disassembly
See exploded view figure above.
Target assembly must be disassembled when doing maintenance. Top cover is attached to target with Velcro, and is simply pulled up to be picked off. Other parts can be picked off after unscrewing guide pin nuts.
H4H target maintenance
Changing X-rubbers
The target is worn by shooting. To obtain a sound proof measuring chamber the X-rubber(s) need to be exchanged at certain intervals. These intervals are affected by shooter skills (grouping), calibers in use and bullet shapes. As a rule of thumb we suggest exchanging with following intervals:
| Shooting range | Rotation after this number of shots: |
| 200yds/m | After 1500 rounds |
| 300yds/m | After 2500 rounds |
| 600yds/m | After 3000 rounds |
Please note that the scoring system has shot counters that may be reset when doing maintenance - to keep track of target wear.
As earlier mentioned, worn X-rubbers (in front of the target) should be put at the back of the target when exchanging the front X-rubber.
Inspecting and replacing the temperature shields
The temperature shields task is to obtain an even temperature inside the target, even if the target is exposed to sunlight. The temperature shields are also worn by the projectiles, leaving a larger hole in the centre sections.
Expect to replace temperature shields when the hole has a diameter of 40cm (15'').
The temperature shields are also worn by sunlight and other environmental factors. Expect to replace when the temperature shields doesn't maintain physical integrity.
H-Target inspection
Repair ricochet damages to target rubber skin
In the event of projectiles passing through the target as they are tilted sideways or otherwise deformed, they may generate large holes in the target rubber skins.
If the large holes occur in the X-rubber, scoring issues are prevented by exchanging it.
If the large holes occur at the main target rubber skin, outside the X-rubber, the holes need to be patched. This is done by spray glue and a piece of adhesive tape, or fast curing super glue and a piece of rubber.
Inspecting the target rubber skin
The target rubber skin need to be replaced in these events:
| 1. | Excess wear (large number of shot holes) at target rubber skin will affect scoring accuracy. This is especially important at the edge of the cut-out of the target rubber skin. This phenomena is particularly bad when the rubber sheet doesn't hold together, and coin sized parts start dangling. |
| 2. | As the target rubber skin is aging, its tensile strength will degrade. The target measuring chamber (between the target rubber skins) may eventually implode if the target is subjected to wind. Implosions can be temporarily be fixed by detaching, stretching and reattaching the target rubber skin. |
| 3. | As the target rubber skin is aging, it will eventually start to crack. Cracks may become holes and compromise the sound proof measuring chamber. |
Inspecting the sensor cables
Sensor cables are put at the outside of the target frame (left and right side). Inspect the outer 10mm of the target frame to see if any stray projectiles possibly has penetrated or snatched any cables. If so, see next chapter how to repair. Sensor cables are easily picked out of the cable channels at the sides of the target to be inspected or replaced.
If sensor cables are completely cut or short circuited, the scoring system will publish warnings, and damaged target will probably stop scoring. However, a snatched or partially damaged cable may not cause problems before it's exposed to moisture. It is therefore wise to periodically evaluate the sensor cables if stray shots has penetrated close to, or trough, the cable channels.
Inspecting the target face
Replace target face when the aiming mark visual definition is getting unclear for the shooter. Shooters with scopes will probably require high quality of the target face.
Inspecting and cleaning sensors
The lower sensors (behind the service panel) are rarely subjected to dust and particles as they are put far out to the side. Cleaning them with a soft brush is normally not necessary more often than when replacing target rubber skins.
However, periodic inspection may be called for, if the inner edge of the target frame is hit. Splinters and woodchips may then cover the sensors, and should be removed.
Inspecting the target service panel
The lower part of the target has a service panel that can be opened to access the target electronics and the lower sensors. Opening and closing is done by operting the white rubber straps at the bottom of the target.
Inspect the physical integrity of the service panel and its hinges/straps, and control that it's possible to close completely. There should be no cracks that sound can “leak” through when the service panel is closed. Always keep the service panel closed and strapped, expect when servicing or inspecting the internals of the target.
Target repairs
Repairs
I/O cables
Target I/O cables, at the bottom of the target, can easily be replaced when the front target service panel is opened. The I/O cables have connectors at both ends, one for connection to the scoring system, and one for connection to the target electronics inside the target.
I/O cables are lead through a track in the target frame, and put in a loop just inside the target frame. They are attached to the taget frame with duct tape, cable ties and cable clips.
Sensors and sensor cables
The upper sensors (upper right- and upper left- corner of the target), and cables connected to them, are subjected to stray bullets. This target model is specifically designed to do rapid repairs. Upper sensors are attached to sensor brackets that are easily removed and re-attached simply by unscrewing the mouning plate at the side of the target frame (remove the four outer screws).
Fixation pin also need to be removed before pulling out the sensor bracket.
Image above shows upper left sensor bracket (KTS part no 13020189) and upper right sensor bracket (KTS part no 13020195). Upper right bracket also include a temperature sensor, thus including two cables.
Sensor extension cable(s) (KTS part no: 1704032-1.83m) are lead through the white cable channels at the target sides, and are easily pulled out of these. Sensor connectors are fully saturated with dielectric grease (KTS part no: 3200009) to avoid corrotion. When operating the connectors please re-saturate female connectors with this grease, for same reasons.
The lower end of the sensor extension cable are hidden inside the hollow target leg. The connector may easily be pulled out of the leg to be inspected and replaced.
Protecting the H4H Target
How to protect the target from stray bullets and ricochets
Protecting the eScore acoustic target
The eScore targets have the critical electronics located at the bottom of the tar
The targets have the most critical, or all, electronic components located at the bottom of the target - behind the service panel. To minimize maintenance cost and maintain the target durability it is recommended to protect this section of the target by use of a knee wall or protective plates. Target stands with protective plates are available on request.
Please refer to this YouTube video for recommendations on how to install the targets.
Protection from ricochets and shrapnel
Some shooting ranges have backstop that create shrapnel when bullets hit bullet catchers. This should be avoided since cables may be cut or short circuited by shrapnel or bullet jackets. To minimize the effects careful placement of the wiring between targets, antennas, batteries etc. must be done. If steel bullet catcher is used, make sure to cover it with rubber material or other absorbent material to minimize ricochets and shrapnel exiting the bullet catcher.