Quote Originally Posted by yorketransport
It seems like a smooth bolt lift is luck of the draw. I have a 10FP action which is smoother than my T&T actions from SSS. I also have a model 12 which was almost a 2 hand bolt lift.

Quote Originally Posted by mattri

Installed a .38 case with ball bearing, also installed a spacer of the same thickness.
This caught my eye. You want to shorten the BAS by the thickness of the case/bearing. Adding a spacer in addition to the case would make the bolt lift worse.

Andrew

The spacer mattri is describing is not internal, but external. It is, in essence, a washer that moves the BAS back, which functionally, is the same as shortening the BAS.
Here's a (blurry, but functional) photo of a spacer on an Axis. The spacer is the silver colored disc just forward of the BAS: