The .429 started off as the .44 S&W Russian then went to the .44 Special and from there to the .44 Magnum. We have seen two increases in size and power for the .429.
We have an answer folks!
Whilst it is very interesting hearing about other .44 cal cartridges, it seems the basis for my initial post was a false one.
I'm still interested to learn about other loadings, but I guess this does address my initial query!!
You cannot wake someone who is pretending to sleep. Stop pretending. Wake up.
Doubt: ...it's the only thing I'm sure of...
-Marsupials: Nature's idea of Concealed-Carry-