Personally I like Lapua. It's kind of like an old saying I read once. "It's not how much you pay, it's how often you pay it". I have Lapua brass I've been shooting for a dozen years and have totally lost track of how many times I've reloaded it. When I clean it (SS Pins, Dawn, Lemishine, water) I then check primer pockets with a Go/No-Go gauge. From my original batch I think I've tossed 5-6 due to loose primer pockets. After all that shooting the cost per case has gone down considerably. Most of my Winchester Brass I've purchased over the years is now in someone else's brass as I've tossed it after as few as 4 reloadings due to loose primer pockets.
Back to the PPU brass, is it the same brass type as 7.62X51 NATO with the thicker walls at the base of the case? PPU was, pretty much until very recently, essentially a military run production facility. All standards were controlled by their military and again, with not much thought about reloading I'm pretty sure.
In closing, I'm not aware of any standard for "Match or Match Grade". Is it inspected for uniform case wall thickness? Neck runout and thickness variations? Capacity? My guess is that at the most it's sorted by weight with the assumption that means equal volume. For serious hand loaders a lot more prep than that goes into creating their "Match" ammo. Yes, they start with top shelf brass but then they go to work, the amount of which is governed by the degree of OCD they suffer from.
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