I am a bit fascinated by that 50s period when German airguns were in significant part branded to dealers (FKN, Burgo, etc) rather than their manufacturers, wondering how that came about and then how it changed.
Sign of the times that "small raptors" (merlin?) were regarded as legit quarry. Also, I thought German law (maybe later laws?) did not allow airguns to be used at all for pest (or in the case of "small raptors", "pest") control? Interesting. When did that change?
And, finally, reliable 55 metre kills on quarry with a iron-sighted 10-11 ft-lbs springer? Nope. Just not going to happen, even with a Venom tuned custom HW77 with a 24x scope.
Similar to some British adverts, like the original Webley claim that the MkII Service had an "effective range" of 80 yards. Which was only true if the measurement of "effective" was, after some experimentation with sight settings, putting most pellets onto a packing crate, rather than precisely through a small mammal's cranium.