I was under the impression the 5.7 rounds are designed for it's velocities. Are they not? I though the blue tip was different construction from red tip. I wasn't aware the blue tips were available as a component either. Maybe I have bad info, if so apologies.
Like a .30 110 tac tx isn't the same as the ttsx or tsx. Much lower expansion threshold. I thought it was a similar thing with the blue vs red tip.