Reinz - You got my interest up as you are the only person I have ever talked to that says to X-ray the slide, so I called up the guy I bought it from. He has owned over 40 different Brens through the years and is down to about 25 now. He says he has had more than a few bad Brens. He has never broke a frame or slide in any of his but he know it has happened. Most of his troubles were Brens he never could get to feed reliably.
The early Norma load was a 200 gr bullet at 1300 fps out of a 5" barrel and it was hard on any pistol. By the time he started shooting Brens, the normal pressure stuff was available, I have read where the Noma ammo has destoyed Delta Elites in less than 500 rounds.
As far as X-raying or Magna-fluxing slides, he has never done it. He is a pipe fitter and they are X-raying welds right now and he thinks he might take a couple of the shooters he has down to the job sight on a Saturday when no one is around and get it done.
Reinz, have you or your brother ever had any of yours tested?