The zinc die-cast Shuttle Bar is a highly accurate
measuring instrument and easy to adjust.
Please read ALL the instructions carefully before beginning.
Figure 1: Model "Shuttle
The Universal Charge Bar model " Shuttle
Bar " replaces all the standard charge bars (for Shot only,
not for Powder) used in MEC single-stage reloading machines
(MEC600Jr., 700Versamec, Size master 77, MEC600, 400, 250 and
250 Super, Mark 5, and Texan LT, GT, and FW). The Shuttle Bar
must only be used together with MEC Powder Bushing and MEC Powder
• Handles all gauges
• For field and target loads
• Lead shot capacity: ½ oz to 2-¼ oz.
• Steel shot capacity: ½ oz to 1-½ oz.
Parts come with:
• Philister head screw (1/4-20)-1pc
• Brass washer-1pc
• Set Screws (6-32)-2pcs
• Plastic dowels-2pcs
• Allen wrench (1/16)-1pc
• Mushroom-shaped inserts (3pcs): Black & Brown Insert
for Steel-Shot + Zinc insert for Lead-Shot.
• Manual with Shot chart only
• 3-year guarantee... but it will last a lifetime
It is strongly advised to check all charges
(powder & shot) with a reliable scale. The adjustable shot
cavity has the added advantage that one can easily adjust the
given setting to compensate for the
different shot sizes and shot qualities on the market, in order
to get the exact payloads wanted.
Please note: When
using any shot size larger than #4, sizable variations in charge
weight are likely
to occur. With a large diameter shot pellet such as #2 size,
heavy tool vibration becomes necessary in
order for the shot cavity to fill completely and uniformly,
particularly with charges weighting in excess
of 1 oz.
Starting with the warranty # 250,000 every
Universal Charge Bar comes with a SHOT-VALVE that has a recess
(like mushroom-shaped) near that end, which forms part of the
shot-cavity. This recess will
accept a choice of three mushroom-shaped inserts:
-Zinc insert uses for Lead-shot
-Black plastic inserts uses for bigger Steel-shot
like #2, #3…and Brown insert uses for
like #8, #9….
The plastic inserts can also be used for reloading lead-shot
but this will wear them out sooner.
SHUTTLE BAR INSTALLATION
Step1- Select a Mushroom-Shaped Insert first
and insert it in the recess with hand pressure. The flat
surface of the Insert should be visible when installed. Place
the Bar upside down on flat and hard surface, (preferably steel)
and take a punch-tool and tap it repeatedly with the hammer
until the top of the Insert
is flush with the top surface of the Shot valve. If the Zinc-Insert
still sticks out in a way that interferes
with the movement of the Bar, remove excess material with a
Step2- Insert Plastic-Dowel-Pin and Setscrew
into end hole of left Bar Body.
Step3- Slide the Shuttle Bar into your shot-shell
reloading machine; making sure that the hole for the
Philister-Head Screw is facing forward. When the Bar is in place,
turn the Philister-Head Screw all the
way in and push the Bar all the way to the left. (Use our Philister
head screw that comes with the
Shuttle Bar. The smaller head diameter of our Philister head
screw allows the Bar to travel further and
therefore to drop the charges more efficiently).
UNINSTALL MUSHROOM-SHAPED INSERTS
- To remove a Zinc-Insert: Insert a punch tool in punch-out
hole and punch out Insert with the hammer
(a nail will also work but is not recommended)
- To remove a Plastic-Insert: Apply finger pressure
The metal inserts are recommended for lead shot;
the plastic inserts are recommended for steel shot
Scales on Adjustment Knobs
The circumference of the adjustment knobs is divided into 40
numbered increments. Starting with
0,1,2,3 etc. up to 39 and back to 0
again because it will be the number of the next increment.
Figure 2. Scales on Bar
Scales on Bar Body.
These scales are marked in increments of 20 lines, numbered
from 0 to 20 as shown in Figure 2.
Reading Shot Chart:
Find the desired shot size and weight on the chart and take
a reading. Every reading consists of two
numbers. For example: For 1 5/8 oz. Of #5 shot the reading is
15 + 15
The first number, 15, stands for the scale setting on the bar
body. The second number, 15, refers to the numbers on the scale
Adjusting Shot Valves
To make a setting, first loosen the Setscrew near the adjustment
For example, a reading of 15 + 15, first turn the adjustment
knob CLOCKWISE until the Reference line on the powder valve
is somewhere between line 14 and line 15 on the scale of the
bar body; then keep turning the adjustment knob SLOWLY until
this Reference line on the valve is in line with line 15 on
the scale of the bar body.
At this point, the O-line (# zero) on the adjustment knob is
in line with the Reference point at the end
of the bar body. Keep turning the adjustment knob CLOCKWISE
for the additional number of increments
until the Reference point indicates the number 15 on the scale
of the adjustment knob.
Note: Accuracy is possible only if the Settings are arrived
at by turning the adjustment knobs
CLOCKWISE. If you accidentally pass by the chosen setting, turn
the knob back and approach the setting again. This is because
there will be some lost motion in the adjustment knob when its
direction is reversed.
When you are satisfied that you have the right setting, tighten
the setscrew near the adjustment knob
with the Allen wrench supplied.
- The elements of adjusting the shot valve showing in Figure
2 are the same for all models.
- The dowels and setscrews must be inserted in proper sequence,
if a plastic dowel is lost, No 7 shot pellets can be used to
• Do not add oil or grease to any other part of the Universal
• Do not disassemble the Bar; disassembly will void warranty.
- DO NOT use the Shuttle Bar without
a MEC powder bushing; to use it without a powder bushing will
overcharge a shot shell with powder and, when fired, will most
certainly cause injury or even death to the shooter and bystanders.
-Use the shot chart, which came with the Universal Charge Bar
ONLY. DO NOT use old shot charts, which were issued for the
old plastic Charge Bar (Model B201, manufactured before 1981,
the method of calibration for these models are different entirely).
- Using the wrong shot chart could result in serious damage
- DO NOT use the Universal Charge Bar without a POWDER SCALE.
Common sense precautions are advised. Make sure you fully understand
the instructions before beginning. If you do not clearly understand
the instructions, DO NOT use the Bar. Avoid careless handling
of flammables and explosives as this can result in serious injury
We endorse checking charges with a reliable scale and adhering
to loads recommended by powder manufacturers. We also advise
the use of safety glasses. We disclaim all responsibility or
liability for damage or injury resulting from reloading shot