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A few years back some students from the University of Memphis came out to the range with their professor doing some audio study concerning gunblast and hearing loss. They had a device that looked like a GI canteen that took readings of decibels of different gun blasts. They picked me as their subject and tested right at my ear protection and took readings from my .357 Magnum, .44 Magnum, and .45 Colt. Much to my surprise, there was not a great deal of difference in the readings. I don't remember any of the readings except that all appeared very close numerically.
What I had perceived to be sharp muzzle blasts was actually concussion. That does vary considerably.
Bob Wright
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