The compressive failure strength of most epoxy resins is 10,000 psi. A common .25X28 screw/bolt (common to most actions), lightly lubricated, will exert slightly under 4,000 pounds of compressive/tensile force when about 150-inch pounds of torque is applied. This indicates that any good epoxy can handle compressive forces generated with tightening actions with hand tools applied to 1/4 X 28 action screws, provided adequate/uniform support under the epoxy. The problem then is soft plastic or wood stocks under the epoxy. The solution being using a non-compressible support, like aluminum tube (pillar) or column of epoxy.