UNless the stock is bedded properly, you can get cracks, but this happens shooting shot loads too. The problem is always guys with "MAGNUM-ITIS".( ie. If a little bit is good, a Lot More is Better!) Everyone wants to stuff more powder in those barrels.
Most round barreled shotguns are just too thin to take the kind of pressure created with "Lots More Powder" as a steady diet. A RB shoots just fine if you use a sensible load of BP, and using the same amount as you would if using a similar weight load of shot.
Those huge balls don't need "MAGNUM FORCE" to penetrate completely through a deer, or from stem to stern on a Black Bear, the most common excuse given by these guys when they bring in those guns with the cracked stocks, for why they were loading the gun so heavy. They don't do penetration testing, so they think the " short cut " is to simply put a double load of powder( Loading for BEAR!) behind that RB.
I am always amazed the guns hold up as well as they do! Its a credit to the foresight of the barrel makers, and gunmakers that more people are not injured or killed by their own stupidity. :cursing: :hmm: :surrender: :thumbsup: