Originally Posted by ol_mike
Originally Posted by The_Real_Hawkeye
Not according to Jeff Cooper. You need at least a .40 in his opinion, and a .45 is best.
A friend says 40 is a minimum, calls a 9mm a cupcake round.


Only Boomers working on dated information disregard the 9mm as a defensive round. Bullet engineering has come a long ways in the last 30 years.


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