I load with a Rockchucker I bought used many years ago, it's strong, simple design and works. The coax looks well engineered but I've never used one so I can't comment on them.
I do have a question on runout though. For the average shooter who doesn't own a custom rifle, someone who'll shoot at max 600 yards with his trued 700 action, barrel of choice and a SAAMI spec chamber.
At what point does runout become a problem, .002, .004? Any definitive examples of excessive runout? Not looking for speculation or theory, but actual results.
I think it has a lot to do with cartridge.
I check run out and keep it sorted for different uses.
EDit to add: When I was adjusting I didn't adjust anything but surplus. Some of that was/is way out of wack.