I had a Herters .44 mag in the early 1970's, so I jumped on the .44 mag I found recently mostly for nostalgia. The .401's had always sort of intrigued me. I had forgotten about their West German manufacture and the "extra" features like cylinder case head recesses. I did some "refinish work" on the .44, enjoyed doing it, wanted another to do things to I would probably not try on my Rugers. I was really looking for another .44 - and probably still am - but the .401's are generally harder to find. The cartridge itself is interesting. I have resisted getting a .41 mag, but will be anxious to see how the .401 performs.
I am an accumulator, not a collector, and I want to shoot them, as well as "work" on them.
Interesting guns, and well made.
Mike