I have pierced a primer in the 43 Spanish Roller and both of my Trapdoors hit very deep into the primers but no problem piercing the cups.
Those gas cuts on the two breach blocks did not have the primers pierced. The Shiloh I pull the breach block when I do the final cleaning and when I saw the gas cuts I checked the primer pockets and they were undamaged. The CPA I don't pull the breach block often and it got a lot more damage before I caught it. I pulled the block after seeing the Sharps block.
The Sharps is the .44-90 BN and the CPA is a .40-65.