I just sectioned a M737 105MM TPDS tank projectile and figured I would post a few pics of it. I messed up and removed the wrong piece with the stenciling :-(. I cut the 2 nylon driving bands slightly short to show the knurling and some additional internals. Below the top smaller driving band is a flimsy gasket type ring. I left that intact for now, but I have no clue what its function is.
If anyone knows what that gasket looking thing is please let me know, thanks!