When chambering, reaming or drilling, the axis of the tail stock has to be aligned with the axis of the headstock spindle. The further off axis the alignment, the worse the results. Period. A good floating reamer holder will help close the distance, within reason. As for floating reamer holders, the PT&G "Bald Eagle" is probably the best one out there.
It does little good to spend all day dialing in the bore in the headstock if the tailstock spindle isn't aligned with the headstock. Think about it.
Lock, Stock and Barrel gunworks
SLC, Ut
USMC 69-73
"This is my rifle, there are many like it but this one is mine. My rifle is my best friend, it is my life."
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