I posted this Q back in January and got no answer and the thread quickly morphed into other things, like most of our threads do. So, I’m going to try it again, and even add to it.
Here’s my initial post:
[i]Bunter has obviousley been ground to remove the “NUM”. It may not be evident in the photo, but the part where the grinding was done is rough and shows grind marks which is not typical of ground bunters.
Round nickle primer is not typical of WBY cartridges. Bullet looks like a Hornady Spire Point but I know that WBY used Hornady’s in some of his early loadings so this feature may be OK. Looks factory original. [/i]
Since then I’ve acquired another. Same bullet but it’s seated a lot deeper and the headstamp is missing part of the “H” so it reads 300 WEATIIERBY MAG. The primer on this one is also nickeled but is more of a dome with a flat on the top, if you know what I mean.
I also just got another 300 Weatherby that is headstamped REM-UMC 300 MAGNUM. Not a reload or a fire-formed case. Obviously formed from H&H cylindrical brass. It’s loaded with a Rem Bronze Point bullet.
I think this is probably one of Weatherby’s first cartridges from the 1940s when he was making rifles in his garage and loading his own ammunition.
Anybody ??? Don’t go into the primer thing again. We beat that to death in January.