All P08s (German military pistols) were 9mm.
Apparently, Remington used to make a small annual run of .30 Luger ammo, but I think the last factory fodder I saw was Fiocchi?
Handloading is a bit of a hassle, as the barrel groove diameter is closer to .310" than .308", so "thirty caliber" bullets are not of the ideal size. I push jacketed .311"-.312" bullets through a Lee sizing die, and they come out at the correct .309+.
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