If what happened to the issues on the Springfield rifles occurred today the government would do a complete re-call and de-mil of all suspect actions. That didn't happen back then. Statistically speaking and understanding how government contract are written and military quality systems work today, I would believe that the contractors would have every rifle returned and proof tested at a minimum before returning to service.
The custom Springfield's we see here are oh so nice to look at and works of art. But maybe they should be just that, works of art for display. Its your face, and unfortunately the guy on the bench next to you or behind you watching, so you get to choose and maybe the others not so much, but anything more then a box of factory 30cal ammo I would not try and then I am not sure of that either.
As I said you get to choose......