I have read a lot on the net about the dangers of using commercial .308 in rifles chambered for NATO 7.63x51. Some posts poo-poo the danger while others predict the end of one's life substituting .308 for NATO. Does anyone have any actual experience or observations of someone losing a body part or blowing up a rifle such as an Israeli re-chambered Mauser or an Ishapore Enfield. Thank you for your responses.