Hey, Puma Apparently the "They Brothers" haven't told you that you can't shoot cast bullets in a semi-auto and even jacketed bullets don't shoot well in a Rem semi auto. I have a 742 Remington in 30-06. I have not fired a jacketed bullet down the barrel, but there have been 3,122 cast bullets fired in it.
I've been a member of the Folsom Shooting Club in California for years. We have a 500 meter Rifle Silhouette Range (Sacramento Valley Shooting Center). I shoot mostly a 209 Grain cast bullet with 25 grains of Reloader 7. It just kicks the cartridge out and locks open the action. I drop another cartridge in and drop the bolt. It is a real conversation piece when new guys come up to visit and see the 742 shoot. I let everyone shoot it, too. Blows their minds.
My favorite two bullets are the Saeco #301 @ 210 grains and a Saeco #315 @ 173 Grains. I mix 3 pounds of wheel weights to 1 pound of Linotype and gas check the bases. No leading, ever and no gas port blockage. The first time I cleaned the gun was after 1400 rounds and only then because the action jammed closed after a shooting session and it cooled down. I also have used the Lyman 311284 bullet with great luck.
Keep those cast bullets rolling in your 7400.
Harold Clark