575 Miller & val Greiss


#1

OK, Can anyone tell me about this one. I thought I had at least heard about pretty much everything, then I got the IAA index and a WHOLE NEW WORLD opened up.

Oh, yeah, and the 625 Mauser Magnum…


#2

There are scarce info about this round ( and the similar 625 mauser magnum)

It was probably a wildcat based on the 50 Browning but no rifles for these rounds are known. Your round is a modern production by OPM