In my opinion it only takes one time to break or crack the wood butt stock on an L C Smith SXS shotgun...... The stress is not accumulated on or in the butt stock.... The butt stock will hold until it meets the strain that breaks it..... I agree with glass bedding LCS butt stocks BUT this is done to make them fit as perfectly as possible to the metal and distribute the recoil over as much surface area as possible..... Good Shooting To You, Jent