HP
Again, I wasn't trying to cause controversy, I just wanted an aftermarket sabot that I could use in shooting all of the projectiles.
No controversy here, but a great learning point.....
The cups in all three are very similar. They all have steps in the cup.
From your description all of the sabots are most likely MMP...
The sabots that came with the SST's are built to Hornady standards and is probably a HPH-12 240 to 350 grain sabot
The sabots that came with the older Shockwaves were 185/300 grain sabots packaged with TC Shockwaves and had the HPH-12 thickness.
The new package od Shockwaves has the newer - thinner HPH-24 240/350 grain sabot.
I guess getting the 12's down some Thompson bores is really a difficult procedure. That is why TC had to switch to the thinner 12's. I am alsounable to comfortably load the 12's in any of my Remingtons, A&H's, or sidelock.
Because I do not buy packaged bullet/sabot combinations, nor do I use the SST or Shockwave this all new information for me. Although there has plenty of discussion on the difficulty of loading some of these sabots down Thompson Center bores, especially the Omega. Thank you very much for the information.