Daryl,
This is what he did in his words:
"The angle of the break into the head of the stock didn't allow for full length steel rods as I'd hoped, but I was able to use hidden brass screws (I like to cut the heads off and slot the shank so I can countersink a bit. I prefer them to pins cut off at the surface)."
Gil
Darrel, I've done a similar thing only I used stainless steel screws that I notched with a file. After I've screwed one in so the notch is below the surface it's easy to break the screw off at the notch. Before installing the screws I threaded the holes the same as the screw and slathered the screws and holes with epoxy before installation.
Steve