Hi Hoskins. First of all, welcome to TFL. Next, Semper Fi (10 years for me). And finally, the problem you are describing is relatively common with Winchester push-feed Model 70s. It can be addressed by a gunsmith. He will either replace the magazine spring, or he will need to work on the magazine feed rails.
Never try to educate someone who resists knowledge at all costs.
But what do I know?