markr6754, that's more a byproduct of being fired in a sloppy, or possibly 'unsupported' chamber, than it is an indication of brass quality.
For example: 9mm brass stamped Blazer, CCI, Federal, Speer, and FC (multiple variations of markings) are all made on the same equipment, in the same factories, with the same raw material.
A reference from an old post, mentioning the marking variations and what they mean. The same can apply to the other brands mentioned above:
FC
FC●
●FC
●FC●
FC●●
Federal●
●Federal
●Federal●
Federal
The dots indicate extruded cases, rather than drawn. The number and location of the dots indicate the production facility.
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For rifle brass, I run what I can get. I try to buy quality when it matters; but it doesn't always matter.
For .223 Rem / 5.56 in an AR, I run range pickup brass. I sort and inspect well, trim as required, and that's good enough.
For other AR cartridges, like 6x45mm, I run mostly my own once-fired brass from factory .223 ammo (yes, I buy factory on occasion). But I am not afraid to inspect and sort range brass if I find a decent quantity at one time, of what appears to be the same lot, fired in the same rifle.
Bolt guns, and cartridges where I care more...
Lapua, Norma, Hornady (particularly for the less common cartridges), and PPU are normally at the top, or close to the top of the list.
Starline is usually pretty decent, but they turned me off after I got a few lots of .458 SOCOM, .32 H&R, and .44 Mag that were sized completely wrong and had not been annealed after final forming/drawing. So, the mouths were oversized, and the brass was work-hardened quite badly. I have very little experience with their bottle-neck rifle brass.
If I know I'm going to be weight-sorting and uniforming a bunch of cases (300-1,000), I'll buy Win or R-P. By the time I'm done, they're nearly as good as Lapua ... it's just that I had to do the work, instead of paying Lapua to handle it.
In no way am I saying that Win or R-P are terrible, but I'm not saying that they're good, either. You asked for opinions, and the above (and below) statements are exactly that: My opinions and preferences on the mentioned brands of brass.
I avoid PMC, S&B, and Federal rifle brass. In my experience, Federal is too inconsistent and too soft. S&B is just low quality and 'sticky' to resize. PMC's primer pockets and flash holes irritated me one too many times. I gave it ALL away, and haven't reloaded a PMC rifle case in the last 8 years.