Steve thanks for showing the results. I don't know what to think. As an aside, I was told that PPU uses a brass alloy for cartridge cases that is not pure brass. Consequently they are harder. Not being a chemist I cannot confirm this but I do know PPU brass is harder. Do not know if this will have any affect on annealing.
Not sure what you mean here. Brass is an alloy of copper and zinc, the ratios of which are tightly held by manufacturers everywhere for strength and ductility reasons. Brass alloy number 360 is the metallurgists name for it, also known colloquially as cartridge brass. Frankly I doubt that PPU deviates from the standard by mixing in other stuff - for added hardness/strength you sacrifice ductility and vice versa. I could be slightly off track though this is how I understand it. A dissertation by a a pro would be welcome.
For Prvi Partizan to have the sales reach that they do, their components have to meet certain standards. Serbia is not a CIP member, but their products undoubtedly conform to this standard because their products are offered for sale all over Europe. Serbia is not a member of the EU either, but their standing is solid within the European community WRT manufacturing. At the risk of angering some here, I believe PPU makes better brass than either Win or Rem. These two companies have nose dived in quality IMO. Unlike SAAMI, CIP standards are a legal requirement. Firearms, ammunition and components must meet the standard to be sold in any of the 14 member countries.
I have sent a request to the factory for some information about their cases. In 2015, they built a new case production facility. I believe that is when they changed headstamps. I don't know how long their products have been imported into the US, but we have been getting these and other European components up here for many years.
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Former C.I.P. member state: Yugoslavia (formally dissolved in 1992)
The Permanent International Commission, confirming that the Socialist Federal Republic of Yugoslavia is no longer in existence, declared during the XXII Plenary Session that the proof marks of the Proof House at Kragujevac, Serbia, would no longer be recognised by the C.I.P. Member States with effect from 30 September 1992.
The Former Yugoslavia & CIP
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