It's been fifty years so I don't remember what current setting we used on the 575 to check the Hfe of the 0140's. This had to do with the HV osc in the 611 during B Phase in Plant 2 and Building 50.
My experience with the 7603 is limited to one cranky unit (out of a half dozen here) that I repaired.
I still have my stash of graded 0140's from 1970 and I found that low Beta examples in the 7603 cause a HV failure to start and high Beta examples caused it to take on a life of it's own and do silly things.
RP
ROLYNN PRECHTL K7DFW