Regarding Winchester Brass - things have changed greatly since the "good ol' days." Winchester used to be rather consistent, while incredibly affordable, and would hold up a LONG time for what it was, especially if regularly revived with annealing. They've really fallen off in recent years, not just in typical consistency, or in low standards for cosmetic QC (like the cases pictured above), but also in letting through functionally damaged brass in HIGH percentages. I do use their brass in a 30-06 hunting load, which I've been loading for over 20yrs, but my expectation isn't very high for this rifle nor load, but I learned my lesson the hard way.
As an example, I went against better judgement and picked up 200 brass of 243win from Winchester last spring, lot LF41. Over 50% of these brass had been struck with a bent flashhole punch. My first thought was that these had been double-struck, however, upon inspection, it became obvious the flash hole punch had become bent. For a double punch, which looks almost exactly like my photo below, the flash hole will remain parallel to the case axis - two parallel punch bores. In my case, when I run a bit of rod stock through the flashholes, it will ONLY pass in at an angle, and the flashholes have a triangular cross-section, revealing the punch had bent. The most frustrating part of the whole deal was the customer service PROCESS. They required me to mail the brass back (fair), and then said upon arrival, it usually takes 3-6wks to process returns, which would ONLY be in the form of a mailed paper check. Personally, I'd have rather gotten replacement brass, and I certainly can't believe anything in the American world in 2017 would take 3-6wks, especially to process a simple paper check!! For months thereafter, I kept an eye out at shops (across the nation, since I travel so much) for the LF41 batch, and sure enough, every bag I found had the same defect present, in high occurrence - visible through the outside of the bag. At most shops, I've carried them to customer service and made them aware, such they don't get returns and/or unhappy customers, but admittedly, I assume most of the bigger stores put the cases right back on the shelf. Out of 201 pieces (one "bonus case" in one bag), only 43 of them didn't have some visible deformity - two were unrelated failures, one crushed and creased sidewall, and one deeply gouged, 1% failure is fine - but having 155 cases with buggered flashholes out of 200 cases really isn't acceptable (I forget now if the two "normal" defect" cases had bad flashholes or not).