Hi Ron,

Great job blending the barrels to the monoblock.

I use a totally different set-up for chambering barrels. It allows me to finish chamber to the correct headspace within .001" the first time every time.

Mounting the reamer to the saddle allows a better feel for the cutting and I can center the reamer holder much easier than the tailstock.

All I do, is get the reamer in by eye until about 1/8" from finish. Then I set the indicator to Zero.
Next, I measure with the headspace gage to see how much more I need. Then I simply go in until I get the correct reading on the indicator. Works every time.