Testing the 300 Blk Feet Per Second Using a chrono to test velocity of a 300 Blk using a 16″ barrel suppressed with a Liberty Freedom. 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)