It is a little different when its your face on the line? I am of the opinion that 99.99999999% of those advocating use of a low number Springfield don't have one. Won't shoot one, and overall, are giving advice that they won't follow. However, when it is your safety on the line, that is a little different.
We know these early Springfields were heat treated according to the eye. SA and RIA were not using pyrometers in the forge room or in the heat treat ovens. SA did have a pyrometer for springs. Now anyone who has watched the show "Forged in Fire" will get to see lots of over heated knives. The knife smiths are put under severe time limitations and I have seen lots of knives with cracks. Early in the show they tested a couple, the end result was sharp shards of steel flying around the sound stage. Now they won't test a knife with cracks or delaminations , they figured out it was too dangerous.
Springfield Armory had such a out of control production line that they proofed, shipped, rifles which the receivers were not heat treated. The documented low number non heat treated rifle blew up.
The idea that because it has not blown up now, it won't blow up, well that is all great until the thing blows up.
Micheal Petrov was a low number fan boy. He had fired this rifle with 150 grain bullets and 45 grs IMR 4895. Owner purchased this rifle from Petrov, and based on Petrov's assurances about how great and wonderful were low number receivers, fired this rifle with a cast bullet load. Rifle shattered into many pieces and the inset is the face of the last owner.