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Old February 25, 2013, 07:42 PM   #6
Senior Member
Join Date: February 2, 2010
Posts: 5,168
Negative on the "increased decibels vs a subsonic round". There will not be any significant difference in the report(that's what the "can" does). The only difference between super sonic and sub sonic would be the sonic "crack" of the bullet in flight for the supersonic round. Since many 147 grain loads are actually subsonic at the muzzle, there is little to be gained by reducing the velocity even more.
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