No, but it would constitute the best observation we could make. And if a whole box was tested odds are the results could land in the ballpark. My biggest concern would be with neck splits. Back in the 90s I bought a 99F in 303 and because trying to find fodder for that gun was a real crap shoot back then I went around to every table at gun shows and bought all the ammo I could find. And I ended up with a fair amount of case splits with old Remington ammo, but still experienced a respectable number successful firings. If I was to do this today I might be inclined to pull the bullets, dump the powder and anneal the cases before reloading.
