PA, I seriously doubt that a few ft lbs difference in action screw torque is fault of you or the recoil of the cartridge. I go through hundreds of gallons of epoxy resin every year. The problem is the lack of compressive strength of their lay up and the brittle nature of their resins in the action area.
Layups need to be somewhat flexible to survive the compression of action screws and recoil.
Nothing will teach you about the importance of flex, than laminate dog sled runners at 20 below, supporting 600 lbs of caribou or green birch over low snow areas.
Or a canoe being leveraged off boulders down a fast chute of whitewater river, full of moose and camp.
