Okay, Argumentum ad Absurdum at that link... The pins there are nothing like the commercial pins the OP is asking about.
Echols is not installing cross-bolts per standard definitions in stockmaking. They are not engaging the recoil lug as is standard and they are not shaped to match the lug... Therefore, the concept of spreading the recoil force over a larger area than the recoil lug by metal-to-metal contact is absent.
The lowest compression value commercial blend steel bed I remember is well over 10,000psi. No shoulder fired rifle is even close to producing the kind of pressure it takes to deform that. No shoulder could handle it if there was that kind of force deliverable.
Making a homogeneous bed is very important in epoxy use subjected to large forces. When it fails it fails at the interfaces.
The splitting forces are built inside the magazine well but are limited by the play in the action screw holes, bottom metal and the action itself.
I am certain Mr. Echols does one hell of a good job, but he is not trying to control traditional splitting with his "cross-bolts".
His comments about untrue recoil lugs is outstanding and his descriptions by photo even better.
