Off the subject a biut, but going back to Clav and the ISOD testing of old UKMilspec parts. We still had this testing facility at Portsmouth Poly during our metallurgy phase and we often discussed whether the impact ball was doing just what you DONT want to do. Albeit that it only left a small but measurable crater. But in stressed steel terms, it's no more than another stamp!
Our Belgian (or spanish or even portugese) made Browning L9 A1 slides crack at this point too. I put in a paper......... you know the sort, 'low ranking Officer suggests' (and a Territorial/CMF/National Guard equivalent to you colonials and antipodeans.......) and, and, and onwards and upwards it goes. Anyway I gave all the technical blurb and suggested that since a new slide now cost more than the original complete pistol, these could be easily repaired by tig ( it's a bit more complicated than that.....) and even over-plated with a steel outer at no detriment..... I don't know where it went, it came back for a further comment once, in about 1989. Being an eternal optomist, maybe it's still in transit somewhere. But on the other hand............
GREAT thread. I wish I was still teaching........