We all see how Strict The refs are at the pro football level for helmet to helmet hits.Lots of former players who suffered many concussions wound up with Alzheimer's at an early age.Guys who are in The Army,Navy and Marines who are shooting heavy Artillery and also those exposed to IED`s are getting concussions sometimes on a daily basis.They are having all kinds of problems from this when they get home.Probably not a good idea to shoot heavy recoiling Shotguns and Rifles on a steady basis.
