Untitled Document

Multi-Scale Charge Ltd.t

 

Multi-Scale Charge Ltd.

MANUALS

 

Shuttle Charge Bar Model


Powder Baffle


Powder Chart

 

Steel Shot Chart

 

Lead Shot Chart

 

Bismuth Shot Chart


Adjusting the Powder and Shot Valves

 

Checking Powder Charts


Reading the Powder and Shot Charts


Calculating additional Powder and Shot settings


Additional Essential Tools (not included)


Assembly

 

Removing the Shot Valve inserts


General Cares

 

Glossary


Picture and Line Drawing


Additional Notes

 

Adjusting the Powder and Shot Valves

These instructions apply to both Models " C/CS " and " D/DS ". The elements of adjusting the powder and shot valves are the same for both models.

Adjust the powder and shot valves only when respective cavities are empty (especially when reducing size of cavities).

For both the powder and shot valves, measurements of powder and shot are controlled by the width of valve opening.

Two sets of scales work together to allow precise measurements.


Scales on the Charge Bar body:

These scales are for major adjustments.

The scale for the powder cavity is marked in increments of 20 lines, numbered from 0 to 20, with 20 being at the outside of the bar as shown below.

 

The scale for the shot cavity is marked in increments of 25 lines, numbered from 0 to 25, with 25 being at the outside of the bar. It is similar to the above diagram.


Scales on the Adjustment Knobs:

These scales are for minor (fine-tuning) adjustments.

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. One full turn of an adjustment knob has the effect of opening or closing the powder or shot valve by one line on the scale on the Charge Bar body.

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! Important !


Depending on which Universal Charge Bar™ model you have (see below), there are two methods of operation. A difference in construction determines whether the settings are arrived at by turning the adjustment knobs either CLOCKWISE or COUNTER-CLOCKWISE.

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The UNIVERSAL CHARGE BARS manufactured before February 1994, did NOT come with Copper-plated-steel springs between the bar-body and the adjustment knobs.

To adjust the Powder and Shot-valves of the Universal Charge Bars that DO NOT have the copper-plated steel spring:

To make a setting, first loosen the setscrew near the adjustment knob

Example:
For a reading of 8 + 13 ( 8 on the bar, 13 on the adjustment knob):

First turn the adjustment knob CLOCKWISE until the reference line on the powder valve is somewhere between line 7 and line 8 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 8 on the scale of the bar body.

At this point, the 0-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 13 on the scale of the adjustment knob.

Note: On this type of Bar, 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 settings for the shot valve are done the same way as for the powder-valve.)

 

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The UNIVERSAL CHARGE BARS manufactured since February 1994 (starting with serial number # 231751), come with easily visible Copper-plated steel springs, located between the bar-body and the adjustment knobs.

To adjust the Powder and Shot-valves for bars that have the flat copper-plated steel spring:

To make a setting, first loosen the setscrew near the adjustment knob.

Example:
For a reading of 8 + 13 (8 on the bar, 13 on the adjustment knob):

First turn the adjustment knob CLOCKWISE until the reference line on the powder valve is somewhere between line 7 and line 8 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 8 on the scale of the bar body.

Keep turning the adjustment knob CLOCKWISE until you reach the 13th increment (on the scale of the adjustment knob);

next turn the knob well past the 13th increment first (to about the 18th increment);

then turn the knob COUNTER CLOCKWISE to return to the 13th increment.

Note: On this type of bar, accuracy is possible only if the final setting is arrived at by turning the adjustment knob COUNTER CLOCKWISE.

When you are satisfied that you have the right setting, tighten the set screw near the adjustment knob with the Allen wrench supplied.

( The settings for the Shot valve are done the same way as those done on the Powder-valve.)

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Note:
Most settings are either right on or will throw slightly smaller charges in order to provide a safety margin.

 

Multi-Scale Charge Ltd.t
Copyright ©1980-2008 Multi-Scale Charge Ltd. Last updated: March 2016