Quote:
Originally Posted by Mark Ouellette
Pressure reaches peak in the chamber.
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Here is a chart, verifying what Mark stated, put out by Dupont showing pressure peaks in the first 1"-1 1/2" of the breech and then drops quickly as the load moves down the barrel. Many of us are shooting loads in our Parkers with pressures considerably lower than the loads that were tested by Dupont for this chart. I wonder if our nitro loads that develop ~4000-7000 psi behave similarly?