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Old 04-30-2022, 20:19   #11
Badger52
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Join Date: Jan 2011
Location: Western WI
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Quote:
Originally Posted by 7624U View Post
Found the Army Definition finally

hypervelocity (A)
2. Muzzle velocity of a small arms projectile of 5,000 feet per second or more. See also high velocity.
So the old .220 Swift (from my childhood catalog-drooling days) + 25%. How are barrel metals for heat (and resultant wear) these days?
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