dude that awesome! you should frame it in some UV resistant glass or something. its probably so outdated alot of the powders arent around anymore. but who knows, maybe some. im sure its a collectors item at least. NOT saying you should sell it.I'm pretty confident what little powder Ive scored will be ideal for this cartridge as its listed near the top of all the load data I've found so far 2lbs of IMR4831, I also scored a pound of R23 as part of the deal. It better work anyways cause it took me several weeks to find scouring the classifieds.
And speaking of load data a quick moment of serendipity connecting the past with the present as I found this old Sierra reloading book sorting thru a box of my late fathers stuff who passed away a year ago this week, yes its been a sobering week but the note I left my dad on the book years ago brought my whole day to a stop. (The horns he took with the very rifle Im reloading for).
View attachment 836153
glad you found it.
i wish i was close to my dad and had memories like that.