I have had one for about 20 years now and they can be alot of fun,, But the light weight of them usually leads to some pain, As far as the reported wandering zero, I am not sure if it is truth or myth,,, I can imaging a guy shooting several K rounds through one each day and wanting his No4Mk1 back real bad.
I will try and dig up a pic of my old one!
Great woods guns that can reach out real far as well!
Peter

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Need 1/2 moon Chiefs special