Holy Cow!

I've dealt with tight barrels before, but this one is ridiculous.

it's an older, flat back 110 and 2x now I have sheared the action hole bolt bolt off my Wheeler Action Wrench at the top of the action screw hole.

I am using the action wrench, nut wrench and a long wrench attached to the nut wrench for more leverage. Normally, all I have had to do is tighten-up all three screws, lay it out on the floor and put step up on the two wrench handles and the barrels breaks free. Now all I am doing is shearing-off the action bolt.

Other than using a hardened screw for the action hole (I'm going to get one now), does anyone have any suggestions?