I am going to leave this open and trim the chatter from it. Let's keep the banter out and make this a scholarly study seeing if we can nail it down. Questions are welcome as they sometimes lead to answers.
We have the question paralleled in the "Headspace" topic which I will somehow fold into this. (I just havent figured out quite how I'm going to do that yet.)
Ok. We recently debated the shoulder angle of the 7.92x57 cartridge.
What especially concerns us here is what did the Yugos cut their chambers to. We figured they used the older 20/48 but didn't know for sure.
Branko was finally able to get back to us with an answer. (He's been right busy.)
Now you'll know which gages to use.
Here's the gen...
Now lets come to the point! Shoulder angles!
You are right. Here the older shoulder angle of 20 48 deg were in use. I attached the standard military GO and NO GO headspace gauges (Military, not SAAMI!!!).
GO is 46 mm in length (1.811 inches);
NO GO is 46.2 mm (1.819 inches) in length.
Both were 20 48 deg.
(''Military rules for 7.9 mm Rifles M48, M38A, M24/47 and M98/48'', DoD, Secret, TS-II, Book II, Belgrade 1962, page 23, pic. 10).