....
I can't think of any normal loads on the tailstock that would exceed
perhaps a couple hundred psi on the tailstock bore of a typical lathe.
That's an order of magnitude higher than the pressure on the Moglice I
put on the gun drill drive, but approx 2 orders of magnitude less than
the compressive strength claimed for Moglice.

Estimating the load on the tailstock by looking at the result of an
accident seems a bit like deciding whether the body metal on your car
is thick enough by running into a tree.

I'm sure you're right for *most* operations. If it were true for all
this lathe has seen, the tailstock wouldn't need a rebuild.

Maybe i just like what I know, but a rebore and sleeve seems easier
anyway.

my 2 cents