Does a 338 Lapua case fit in the 338 Win Mag Lyman M Expander Die?

It's not listed as compatible on Midway or Lyman's site. Even Lyman "tech" support said no go. However, a 338 LM case fits in my 22 caliber expander die body. Stands to reason the die bodies are the same across the cartridge ranges, with a caliber specific expander.

Anybody have the 338 M die AND 338 LM brass to confirm?

Thanks,
Jon

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