I used Lee collet dies for years, but now do the same as Ted. Noticed to loss in accuracy. I use Redding or Forster does with a Co-Ax press. The problem with Lee.collet dies is that the cases become harder to chamber after a few firings. I prefer 100% functionality.
That's why you use a body die to bump shoulders when chambering gets tight. It's a very simple process.....neck size, bump shoulders as necessary. As mentioned before, I have rifle specific brass, and seldom need to bump shoulders at all.
It is irrelevant what you think. What matters is the TRUTH.