Hi friend, The little bit I remember from the man who is helping me said "Hell NO!" and looked at me with the sort of look that you might give the offspring betwixt a liberal and a midget with tourretes. I guess the polite way to splain it, or break it down if you live in Oakland, would be that you can use start loads for jacketed bullets and carry them over to cast if you be the sort of chap that is lucky, I aint. The reason this is so is because lead bullets create less resistance as they get spun down the tube than do copper clad pills (of the same size). But your dad gum lead alloy bullets better be hard enough to be spun that abruptly or they will lead your bore (I like to add "dad gum" every now and then for drama)supercub said:Can I use the same powder and amount for a jacketed bullet as the same size diameter hard cast bullet? Will the bullet composition significantly change the amounts of pressure?
No, you cannot if using the same size diameter cast as a jacketed bullet. A jacketed bullet does not have to seal the gasses behind the bullet to prevent gas cutting as does a cast bullet whether it be hard or soft. Change the cast bullet diameter to .002-.003 over bore diameter and the answer becomes yes, you can provided you pick one of the slower burning powders in the data to load and start with the starting load.Can I use the same powder and amount for a jacketed bullet as the same size diameter hard cast bullet?
Pressure will normally be less with a cast bullet than a jacketed bullet. All things being equal you can get the same jacketed bullet speed with a cast bullet with less powder and less pressure until you get up to and above the 2700 fps velocity range.Will the bullet composition significantly change the amounts of pressure?