The NOE Signature molds were newly discovered designs not produced during Elmer's lifetime. I had the 277g it was OK but I like the late 503 which may have come after Elmer passed, better.
It would be interesting to find out what Chamber Dimensions Elmer was working with. I suspect He was the reason 44 Mag chambers Got Longer. Only in my earlier Anaconda is the chamber short enough that the forward band of a late #503 is In the Throat. All the others, the forward band clears the throat by a good margin. I think it's Elmer's fault even though he was adamant about sizing .429".