Stocks are not cracked by pressure, but by recoil which is a slightly different thing. But today's factory shells are loaded to work gas or recoil operated guns and need the recoil to work the action. Load data is slanted to loads which should easily work those guns, with the more modern obsession for velocity which is getting past sane in my opinion. I never thought I missed a bird because my shot was not traveling at 1400 plus fps, but somebody must or they would not have so many hyper velocity loads on the market.