BTW, another little tidbit from Mickey Fowler's GUNS article on the AMT
Custom Shop:
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Paredes informed me that the 22 LR reaches it's maximum velocity and
bullet stability in approximately 13" of barrel.  A barrel longer than
13" causes a loss of velocity, and no improvement in accuracy, however,
the shortest legal barrel length allowed is 16".
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Note:  Paredes is Sam Paredes, the gunsmith who runs the AMT Custom
Shop.
Regards
John
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