| TECHNOLOGY |
How to test your Chronograph
Using Two Identical
chronographs
Against a Higher accuracy chronograph
Optical Chronographs
Basic principles
Optical technology
Accuracy problems
Existing Chronograph Technology
Limitation and Problems
with Optics
Muzzle Blast Problems
ACCUTAR Chronograph Technology
Adaptive Calibration and Test
Reduced Muzzle Blast Effect
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Target Sensors
Mechanical Switches
Piezoelectric Crystals
EMRS Sensors
Adaptive loading
Powder mass
Projectile mass
Ambient Temperature
Atmospheric pressure
..
Using Two Identical Chronographs
for Testing
..
Using a High Accuracy Chronograph
to Test With
..
Basic Principles
of Optical Chronographs
..
Optical Chronograph Technology
..
Accuracy Problems
with Optical Chronographs
..
Limitations and Problems
with Optics
Every gun exhibits different characteristics that depends on ambient temperature/pressure, metal ware, aging, metal-purity, lubricants, etc. In short it becomes theoretically impossible to determine an accurate universally acceptable loading table. Using Adaptive Loading Technique is the closest that you will ever get in determining the right load value. A simplified process is listed below (because of liability issues, at the moment we did not incorporate numerical analysis or adaptive loading software that eliminates most of the work described below).
Change only one parameter at a time (powder for example).
Make 10 loads spread evenly from min-to-max allowed.
The load spread should be (max-min)/10 per load.
Enter these loads into a Powder Scale String and save it.
Fire these 10 loads and save it under the same string name.
If you are familiar with numerical methods, cubic spline will do.
For the rest of you one or more
run would be required.
Use above set of two strings Powder & Velocity.
Select the range that you want from the Velocity string..
Use powder string to get new set of min & max values.
Make up a new set of 10 loads and repeat the process.
Second round should give you a very accurate table.
This process is convergent, that is, as you repeat the
process you get closer and closer to the perfect value where the average velocity represents the average powder weight exactly.
You can work with minimum of three loads if you wish.
The fewer loads the more runs you have to perform.
...more to come...