Still pretty new to casting, but enjoying it.
I have a revolver and a bolt action rifle chambered in 357 magnum. I'm intending to cast 158 semi wadcutters for both. These boolits are going to get pushed hard. Thinking 1300 fps range out of the revolver and 1600 fps, maybe even a bit more if I find a load that is safe, out of the rifle.
Would I be better off getting a GC mold or is it realistic to wring out that kind of velocity from plain base bullets? My goal 1.5" groups at 50 yards from the rifle, though 1" would be nice and, of course, no leading. Currently the only alloy I have onhand is about 11 BHN, but I'm happy to step up to harder alloy if needed.