I'm thinking about loading some rounds for me and a friend for our 30-06; we both have Rem. 742 semi-auto. In the past I've heard that you do not shoot lead bullets in semi-autos because that could plug the gas port. I've recently read an article where lead bullets were used in a Garand with no problems. Can I load and shoot cast bullets within my semi-auto with no problems? My gun was built around 1976 with a golden spread eagle (painted) on the side. I absolutely love this gun but am afraid to shoot lead bullets in it or any other semi-auto, including my Desert Eagle 44 Mag.