Not sure if the Dougall Lockfast has been discussed here before. David MAcKay Brown talks about its immense strength on his website and WW Greener bashes it in his The Gun and its Development which can be accessed from our Books forum. I just thought that it would be nice to hear what the experts here have to say about this very interesting old design.

One more Lockfast gun in a US collection can be seen here.

Anyone here have one? Thanks in advance for any information and good hunting!