Future Darwin Award Nominee

[Aragorn243]

Yes, that's the one. Better source than Wiki: The Italian Vetterli M70/87/15 6.5mm conversion : : CRsenal

The problem isn't that they can't shoot the modern load, they obviously have. It's that they can't shoot it indefinitely and no one knows how many times they were fired. They were issued to second line troops in WWI and colonial troops in @WWII.

Gun Boards has a rather long discussion on them and numerous first hand and second hand accounts of them failing with full power loads along with many who swear by them.