Dan,
Regarding your rifle, you say that it was determined to have been done by Ross King due to the fact that Michael had seen another King rifle with the roller installed.
Do you know if that other rifle was a match rifle, or a sporting rifle?
The bolt knob checkering on your rifle appears to be a band of checkering around the knob. From reading Michael's information on Ross King, he said that King's bolt knobs were checkered like Wundhammer's, a circular pattern on the underside of the knob, but with courser checkering.
Do we now know of another checkering pattern on King's bolt knobs?
A very interesting rifle, I have one with similar characteristics.
Thanks and best regards,
What Cheer
