Whoa Back at Ya! A few problems with your argument:
1.This whole issue started about research AND VERIFICATION of him, versus us and your statement pretty well sums up the problem. The rifle's provenance is "pretty well established" is that like, being kinda pregnant?
2.When I Google a combination of search terms Jobson/O'Connor/Minar/Rifle I get exactly 2 articles, Jobson's orignal 1966 and Hill's 1988 and no identifiable photos.
3.Unlike you, I feel the fact the inletting can't be compared is VERY important, because Petrov gives this great weight as to HIS rifle POSSIBLY being a Minar, from the very start. The inletting that Petrov said had no equal, a unique indicator, was not available in Jobson's rifle for comparison.
4.Herein lies the rub... "Petrov believes the Springfield in question is a Minar" What we are talking about here is, how quick is he to believe HIS gun is a Minar, WHILE DOUBTING ANOTHER'S IS NOT? What does he require for proof from us, but accepts as belief, from himself?

Each member will have to answer these questions for themselves. Let me make it clear, that I am not advocating not reading or purchasing Mr. PETROV'S BOOK or musings! I wouldn't be without a copy, present or future editions. What I am saying is his research and such, I find could be applied in a more equal manner. Jerry