Thanks gunnut. I've got a 45LC in a Bisley, love it. Would love a 22 but they are not cheap and not many out there.
To do a complete conversion, which is most likely where this will end up, it will run under 250.00 complete from Gun Parts.
To do a cheaper test run I wanted to try the Bisley hammer then collect the rest of the parts later.
This should end up as one of the few convertible 22lr/22mag Bisley's out there.
Thanks again.