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Kiwi · 04-02-2021, 05:29 PM

Looking at specs both are 7.65

Mauser 7.65 x 25

Luger 7.65 x 21

So a luger cartridge would chamber in a Mauser
but a Mauser cartridge would NOT chamber in a luger

You have a Mauser - so try to chamber a Mauser round - carefully
If the action does not close completely it is probably a luger

The other way is to use a Vernier to measure the chamber depth from the breech face to the beginning of the neck.

04-02-2021, 05:29 PM	#2
Kiwi User Join Date: Mar 2019 Location: Wrong side of the Delaware river Posts: 336 Thanks: 237 Thanked 478 Times in 189 Posts	Looking at specs both are 7.65 Mauser 7.65 x 25 Luger 7.65 x 21 So a luger cartridge would chamber in a Mauser but a Mauser cartridge would NOT chamber in a luger You have a Mauser - so try to chamber a Mauser round - carefully If the action does not close completely it is probably a luger The other way is to use a Vernier to measure the chamber depth from the breech face to the beginning of the neck.