I have NoI MkIII Enfield in 7x57R, but a 9, 9.3, 9.5 or .40 calibre works just as well in either the x57 or 303 case for the enfields or the 7.62x54R ( or 444 Marlin ) case in the Siamese.All of which are easy cases to find.I think from memory that the 54mm Russian case is very similar to the original Siamese 8mm case,I have had no feeding problems with mine.

.....did you get my email ?

Roger