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Keith J · December 21, 2001, 06:01 PM

Unless you have a ballistics lab, I doubt you will make any headway as all you can see are the peak pressures. Its not the peak pressure that gives the performance but the integral of the pressure curve as the bullet is traversing the bore.

It was covered in an American Rifleman and using piezo instrumented test guns, the pressure curves of duplex were anything but predictable.

The gun may be fine once, twice or 3000 times but there's always next time. Golden BB's, gotta watch out for them.

December 21, 2001, 06:01 PM	#32
Keith J Senior Member Join Date: December 15, 2000 Posts: 469	Duplex loading? Unless you have a ballistics lab, I doubt you will make any headway as all you can see are the peak pressures. Its not the peak pressure that gives the performance but the integral of the pressure curve as the bullet is traversing the bore. It was covered in an American Rifleman and using piezo instrumented test guns, the pressure curves of duplex were anything but predictable. The gun may be fine once, twice or 3000 times but there's always next time. Golden BB's, gotta watch out for them.