10 years ago I was shooting winchester brass. sorting it by weight, neck thickness. Ordered 1K from Sinclair, and inspecting it, flash holes off center, and not round. Sent it back pronto. switched to lapua and never looked back. I have seen new winchester brass at the store, still looks the same. Even saw some here for sale awhile back, same problem. I dont understand why they just dont fix the machine to produce better brass. I have some norma brass, and it measured out just as good as lapua. I had a 221 fire ball, at the time could only get Remington brass for it, was not up to lapua quality. I have peterson brass, measures out better than lapua for weight and neck thickness. for the price difference, if Im going to spend all the time to get a good load, better than I can buy factory, its not worth it to use bad components. Ive shot a lot of serria bullets, did well with them, but when you put a measure tool on them you can wonder why do they shoot as well as they do not being that consistent. Bergers are much more consistent, weight, base to ojive, OAL, and they shoot more X's. If your trying to hit a deer at 100 yards, bad brass and cheap bullets will do the job, and if your target is a paper plate, same thing. But if your trying to get the most from your rifle, you cannot cheap out on barrels, bullets, and brass. It all comes down to what you are happy with. I'll never be happy until they all go thru the same hole. Damn the cost, it's whats on paper that counts.