>>64055159
If the casting is in the range of these 8x57-58 or has a 360 Nitro parent in general then you're in for a little more research, because the there are a handful of obscure loads that dimensionally overlap. If that happens it unironically might be worth picking one that's dimensionally compatible and reproofing in it for piece of mind. Nearly all of them are also out of production and most are so rare that individual catridges are collectors items, some of which only single digit numbers are known to exist.

A bit of an oof for shootability, and afaik it also hits sale value a bit. You'd have thought it would prove collectability, but who am I to say.