I replaced my sometimes carried S&W 296 with a .44 C/A Bulldog (bought used with a nice action) because the Bulldog was a better size for me to conceal carry.
Based on my favorable impression of the Bulldog, I bought a C/A .40 PitBull (not that smooth of an action).
I put some .40 snapcaps in the PitBull to try and smooth out the action. After a few minutes, I broke the "flag" off of the transfer bar on the PitBull and discovered that the gun would not fire with a broken transfer bar.
C/A's customer service was great, however, I retired BOTH of my C/As from conceal carry use due to this design feature.

Mark