I forgot this bit of interesting fact until I read ReverandAl's post about ISRAELI Mauser's.
The first brass I loaded for that 7X57 Carbine was necked down 8X57 ISRAELI brass. When I bought dies from Bowers, they had no 7X57 brass in stock. I cast bullets & had them ready to load when I got home from the range with those 20 empty W-W cases. But ol' WesThompson, who owned/ran that Juniper Tree Range had 50+ once fired cases. Two bucks for this poor young College kid. I've still got one up on the souvenir shelf on my bench.