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Old January 4, 2021, 04:41 PM   #20
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Join Date: April 28, 2001
Location: CA
Posts: 1,316
Pressure does not have as much to do with muzzle blast as gas volume which from my observations is a direct result of POWDER CHARGE.

A case full of H110 may have the same pressure as less than a case full of w231 but the mass of the powder charge is much less and the blast will also be less.

H110 will produce a much bigger fireball at dusk than w231 because the slower powder also tends to burn less completely in the barrel and a there is a lot more of it left to burn in the air in front of the gun.
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