Quote:
Originally Posted by Salavee
Peak pressure is only part of the equation and usually takes place in the first three or four inches of barrel length. The remaining barrel length provides for most of the continuing pressure curve and resistance and the resulting projectile velocity , even though the peak pressure may take place at roughly the same time, the peaks will be different as will the duration.
Isn't a modest continuing pressure curve provided by the expanding gasses of a slower burning powder while a spikey pressure curve is the result of a powder with a faster burn rate ? I'm not looking for an answer, that's just how I see it.
Carry on !
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I will let the Hodgdon data that I posted speak for itself. They produce the powders and the manual, so they are much more qualified experts than any of us here.
Their H322 and H4831 data says all that needs to be said. 14% more velocity, while producing 3% less pressure.