Unknown rifle cartridge


#1

What caliber do I have and who made it?
2 piece case
.624 rim
.501
.474 c/m
.436 blt - could be wrong blt
2.05 c/l (.423-.439 c/l for head)
2.38 o/l

%20a


#2

At first sight, just basing on the pictures, it look like a 45-70-405 (the head had been cut) inserted in a typical berdan cut down case.
Measuring a 45-70 and a 11 mm spanish berdan, most of the measures match yours.