Quote:
Originally Posted by Jaco1234
Use a special breach designed to hold high pressure.
Place a measured copper slug in the out put of the breach and screw a specially designed plug behind it. Set off the charge. Then measure the deformity. Of the copper plug.
There are too many variables gun to gun and within a particular powder to do an accurate calculation.
If you are loading Trail Boss, you are staying well under max loads.
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You might find that method used in some third world country. Nearly every ammunition manufacturer today uses quartz piezo gauges, and has for quite awhile.