I didn't know that Parker used a screw in that location. The fracture happening across that screw hole is mighty suspicious, but I'm sure it would take more than a standard factory load to cause a failure at that point. Double charge perhaps?

I have seen amateur repairs using screws into the ribs, and have a Lefever that has a long machine screw that ran through the forearm loop and into the top rib. I don't care to shoot it or sell it until I can remove the rib to see if the drill or tap cut into the barrels at a point uncomfortably close to the forcing cones.

A true sign of mental illness is any gun owner who would vote for an Anti-Gunner like Joe Biden.