I know this is important and I have been shown a couple of tricks over the years to minimize it without resorting to high dollar dies and other equipment.
What I had never done was actually measure it. I picked up some equipment to do so last weekend and I have been practicing on assorted handloads I had on hand.
At what T.I.R. do you put it in the practice category, and at what T.I.R. do you break it down and start over?
I ask, because I was pleasantly surprised at the low numbers I was seeing.
I am comfortable and competent with the tooling and know I am not getting false readings.
EDIT: I finally found the right search and found a good bit already posted!