Just makes sense they would be Speer's from a business sense, but doesnt add up in my mind.
First off the run of the mill Hot Cor's are not the most accurate Cup-n-core IMO. I think Sierra and Interlocks have an edge in accuracy, yet the blue box stuff shoots very good.
2nd, the blue box bullets have a more blunt tip than the comparable weight hot cor's Ive seen.
I think they are possibly Speer manufacture, but of a non-cataloged bullet. So not Hot-Cor's. Would love to know for sure. Maybe MD has some insider info.