There is an interesting article on The Manhattan Conversion for Colt replica cap 'n ball revolvers. The conversion entails brazing/soldering a piece of metal to the frame where the hammer falls that prevent spent caps from jamming between the frame and the hammer. The hammer must be modified by slimming on both sides to allow it to clear the metal insert.
The modified hammer looks somewhat like a Ruger Old Army hammer. Imagine the frame like that of the Ruger but with an open top.
Scroll down this link to a CAS forum to see illustrations: http://www.cascity.com/forumhall/index.php?topic=38252.0
The modified hammer looks somewhat like a Ruger Old Army hammer. Imagine the frame like that of the Ruger but with an open top.
Scroll down this link to a CAS forum to see illustrations: http://www.cascity.com/forumhall/index.php?topic=38252.0