Anyone shooting or loading 9mm =hard cast bullets in 9mm? I need to develop a good load now that my range requires it on steel.
This depends on the individual caster. Most casters are using scrap lead-based alloys, or are buying ready alloyed bullet casting metals from companies like Rotometals, or Buffalo Arms. Lead wheelweights are pretty much a thing of the past now, almost everything now in use is either steel or zinc. "Hard Cast" simply means that the alloy the bullets are cast from is not simply pure lead. Pure lead has its place, but due to its low brinnell hardness, about 5 bhn, pure lead works best in bullets by alloying in tin and antimony in varying amounts (percentages really) to strengthen the alloy for the desired performance. There are formulas for doing this. Bullets that are too hard are as bad as bullets that are too soft. The alloy must be matched to the desired performance level. Bullet fit to the gun is far more critical for accuracy than bullet hardness.Home cast bullet seldom meet the definition of "hard cast" unless they are intentionally cast that way by adding in tin or similar metal. And using a hardness tester! I don't recall the exact figures off hand for hard vs soft but using wheel weights usually results in fairly hard bullets. Immediate quenching of cast bulets can also add to hardness. Without a tester it's nearly impossible to tell the exact hardness. These days, with the poly coated (Missouri, Acme and others) bullets it makes little difference! You can coat them yourself or order them coated (in colors even!). For practice ammo that's about all I use anymore! Plated bullets I load a bit hotter and use for practice as well. Didn't have none of this fancy stuff when I was a kid, by cracky!
Cheers,
crkckr