So the highwall was used as a test action by Winchester for years during a time when most of the high pressure cartages were designed I'm sure over pressuring was done day in and day out.an old gunsmith friend of tells a story of them blowing up one repairing it and putting it back to work.Winchester made guns and cartages.rugers are made like alternator covers.and the Italians were never known for their metallurgy ( I should know I raced a ducati for several years).everytime I shot my navy arms rolling block my dad would say don't forget the Italians made the fiat you know