Ok, made myself some tools for trueing and rechambering my Remington 700, .308. I have a lathe question. How accurate is "acceptable" to be able to re-chamber. With a test bar between centers, I have .001 of run out with 14" test bar. Now I will rechamber from the steady rest since my headstock is too wide for my barrel to stick out enough. Normally I should put the barrel in the 3 jaw chuck (which is .001 run out) and hold it with my tailstock. Then put the steady rest with a couple of indicator to make sure nothing moved during the switch to the steady. Now is this "good enough" to be able to make accurate chambering or I should work more at making sure my run out is .000 at the tailstock where my barrel end will be located on the bed. Second thing, should I use a floating reamer holder or using my tailstock live center is good enough? I have watched a gazillion videos on youtube about chambering. Some guys use the floating holder, some others are not. Nobody mentions anything of how straight their lathes are. So, guys that do chambering, what are your setups run out?