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Old February 8, 2013, 10:21 PM   #5
Clark
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Join Date: December 4, 1999
Location: WA, the ever blue state
Posts: 4,678
The bullet energy is the force times distance.
That is a function of average pressure... minus friction.
The peak pressure cannot exceed the strength of the brass... the weak link.
The large capacity cartridges can have a higher average pressure without exceeding the maximum pressure.
So large capacity cartridges can get higher bullet energies.
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