I would be uncomfortable unless I looked at every head stamp myself. There are many cases that are very similar in size but can cause issues in some chambers. For example, a .270 .280 or .30.06 would all fall through the same sorting slot. I expect a .22-250 and a .243 could easily end up in the same tub. It is an astonishing find, and you may get lots of usable ammo out of it, but I think I would want to do it by hand in good light (I'm old).
Head stamps are good but not completely reliable. A lot of guys wildcat or form new cartridges from parent case as well like 308 to make 243,7mm-08,and on and on there are so many. Normally they don't leave these laying around as they spent so much time in the process but you never know where they can show up.
This is an incredible find and will be lots of fun for the OP for sure.


















































