Hey Jim.
I have not shot anything with the TNT's yet but I did chrono 5 various 22 mag loads out of my Ruger M77.
Those TNT's were traveling at 2208 ft/sec! All other loads were in the 1800's. I did not shoot the CCI MaxiMag+V though, and they are supposed to be smoking rounds too.
Out of a Ruger single six the TNT's were moving in the 1600's. the others in the 1200's. So If they are accurate in your gun I would stick with them. I am...