Louis Ohland wrote:

I've had to diddle around trying to clamp a V block down onto a 2-3-4
block while keeping said collection square to the spindle

Actual use was drilling for a scope mount on a Stevens Favorite single
shot. I left the action on the barrel and used a Kant-Twist clamp
(w/poly jaws) to hold the action against an angle plate (keeps the
barrel lined up at right angles to the action). But I had to use blocks
to raise the v blocks high enough for the tang to clear the table (the
tang was actually down in a T slot).

Could you have taken the slab sided action (assuming) and clamped that into
your mill vise and then indicated the barrel to horizontal? Then place a
support under where you are drilling?

I have a Stevens miserable loader that I've relined and just need to cut off
the barrel and crown. I didn't get grandma's gun so I bought one that
needed a bit of work so I'd have one for myself.

Wes