If the MOD spends so much time and effort disposing of their own ammunition, because it‘s out of its packaging, I hardly think they‘d base their logistics planning on using ammunition randomly picked up from other people.
"Race, the Nation and the Soldier" ?One account described an English soldier stoically having his shattered arm removed in the aftermath of Waterloo, while a wounded Frenchman beside him wailed and screamed, which "seemed to annoy the Englishman more than anything else, and so much so, that as soon as his arm was amputated he struck the Frenchman a sharp blow across the breech with the severed limb, saying "Here, take that, and stuff it down your throat, and stop your damned bellowing!""
"Race, the Nation and the Soldier" ?
Found it, banned by Google, pdf only on Bing, Ask gives a link.
Er, because 7.62x 39 is to be found in large quantities but appalling quality. The coppery-cased Chinese crap is particularly awful, and is absolutely everywhere (or at least it was a decade or so ago).