is 9mm considered a good self defense caliber? i know the larger caliber rounds .40/.45 can and will do more damage to the BG, but how does the 9mm fare? all the pistols i own are 9mm..and it seems like i always lean toward the 9mm for future buys but DO I NEED AT LEAST ONE PISTOL THAT IS .40/.45???? THOUGHTS?
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beretta 92fs 9mm
beretta px4 9mm
walther p99 9mm
glock 19 9mm

