December 11, 2013 Wishse gives his thoughts on the best caliber for self defense, 9mm, .40 S&W, or .45 ACP. Share this gun video:Click to share on Facebook (Opens in new window)Click to share on Twitter (Opens in new window)Click to share on Pinterest (Opens in new window)Click to share on LinkedIn (Opens in new window)Click to share on Tumblr (Opens in new window)