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DonVoigt · 11-30-2016, 07:28 PM

Lugers are not designed for Steel case ammo.
They have an "extra" ring in the chamber for sealing purposes. After about 1940 Mauser eliminated this "obduration" ring as steel case ammo became more prevalent.

You can check your chamber by inspection with a light to see if the ring is there or not.

I'd just avoid steel case ammo, brass is much kinder! JMHO.

11-30-2016, 07:28 PM	#2
DonVoigt User Join Date: Apr 2015 Location: near Charlotte NC Posts: 4,681 Thanks: 1,443 Thanked 4,356 Times in 2,041 Posts	Lugers are not designed for Steel case ammo. They have an "extra" ring in the chamber for sealing purposes. After about 1940 Mauser eliminated this "obduration" ring as steel case ammo became more prevalent. You can check your chamber by inspection with a light to see if the ring is there or not. I'd just avoid steel case ammo, brass is much kinder! JMHO. __________________ 03man(Don Voigt); Luger student and collector. Looking for DWM side plate: 69 ; Dreyse 1907 pistol K.S. Gendarmerie