First, yes this is an old thread, but it's younger than brass cartridges with necks that are not concentric.
Second, I think everyone's opinion may be right, even when their results are opposite. I see this as a problem with manufacturing quality. I just sent back a brand new Redding FL sizer that had three problems. The threads were extremely rough; I have seen Rigid plumber's machines cut smoother threads than these were. I was afraid that a few trips in and out of my press would have started cutting my press threads oversize. The next issue was this brand new die had been physically beaten by something that flattened the tops of the three lowest threads, and made a 3/32" diameter dent between the threads and the base. I regret not taking pictures of it. Finally the expander stem was horribly off-center. Not trashing Redding too badly here as the replacement is very nice on all counts.
But here is the problem, why do we get such variations in workmanship? Is their no pride in a job well done, or is it because the robots that are making things these days have no pride?
Why do I open the Sinclair catalogue to read that somebody's standard dies are "some of the finest in the world" and made on ....lathes.....tightest tolerances..... manufactured to the highest standards..........polished......flawless functioning? This sounds great until I look in the Competition die section and read that to get precise neck sizing, I should buy a die with a bunch of interchangeable parts. But wait a minute, wasn't the standard die supposed to be the one of the finest in the world. The answer folks, is mass production.
To argue that having one die set of any brand, or design, that produced poor results is meaningless. Just as the poster several pages back did with the multi level test, to test the worth of a die design, one ought to try several, or ten different sets from different lots, then compare the results. In other words, we the consumer should do the quality checking the manufacturers don't do. Those are probably fighting words to some, however we don't have Consumer Reports Magazine riding the backs of lathe operators with chattering cutters. Instead smooth talking copywriters get hired to assure us that the die we are buying is among the finest in the world. Disgusting isn't it?
A few pages back the term elitist came up. Unfortunately the elite who can afford to pay for custom perfection have the best chance of getting it. Meanwhile the rest of us will have to continue to pay our money, take our chances, and try to stomach the mediocrity of this mass production world.
bbowles it sounds like you are doing it right. Everybody has a different version of right, but if your ammo shoots to a competitive level, demonstrated in competition, or at least witnessed against other rifles, then you are OK. Don't place too much credence on internet bughole shooters.
Your biggest asset is the test equipment you have. Buy more of it, and buy one or two of the other ammo producing products. Ever wonder why there are so many sets of used dies around? Some were probably not worth sh!t when they were new. One poster way back talked of having die boxes with mixed pieces in them. That is probably where your journey is taking you. A Chev front end, Chrysler doors, Ford rear end, Toyota roof etc. Good luck.