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Message: <blockquote data-quote="ASP785" data-source="post: 1998406" data-attributes="member: 12170">I do have the velocities but I disagree with you that the velocities are very relevant for Barnes bullets. For M193 and M855, the faster the better as those are bullets whose primary wounding mechanism is fragmentation and have a certain velocity range in which they will fragment. A bullet, such as the Barnes, whose primary wounding mechanism is controlled expansion, velocity is not so relevant, as long as impacts are in the velocity range where the bullet is designed to expand.See the link for more information on this: <a href="http://ammo.ar15.com/project/Self_Defense_Ammo_FAQ/DocGKRData/223%20Barrier%20Rounds.htm" target="_blank">http://ammo.ar15.com/project/Self_Defense_Ammo_FAQ/DocGKRData/223 Barrier Rounds.htm</a>The link shows Barnes bullets with a near 600 FPS velocity differential fired from multiple barrel lengths. Their is almost no difference between expansion and penetration in the 8" barrel and 20" barrel gel photos.To answer your question, the data from my earlier post includes two SBR's. 2186 fps for the 9" 300 blackout and 2425 fps for the SBR 5.56.</blockquote>