Repair went well. Did end up using a 2 part epoxy but it cleaned up easily and the nature of the chip did not need clamping. Was a tight fit and set over night.
Looks much better than the pic. What looks like glue is just reflection. Gave some extra space with a dremel to have a little clearance for the rear of the action. The likely problem was a too tight rear action screw and a too loose forward action screw - the opposite of what it should be. Will test out at the range this weekend.