Thanks for the response...I recognize your name, and I am glad to get your experienced information.
This mold (hopefully) has a tapered GC shank .424 to .427 if I am reading this drawing correctly.
The vintage Lyman GCs I have measure .425 ID (measured with a dial caliper...yeah I know it ain't the exact proper tool)
I've had a dozen or so NOE molds, and his molds usually drop a bullet that is about .001 larger than advertised (with my casting techniques and my usual alloy of COWW.) If this mold does that, the GC should be a perfect fit. If the Bullet drops "as advertised" the GC may fit loosely...but I have a couple remedies that can help that.
noebulletmolds.com