RE: Want to mold my own BP bullets
A general rule of thumb is thata longer bullet needs a fastertwist to stabalize it.
The longer (heavier) REAL should be the best. I've tried only the 250 gr REAL in my new 1:28 GM-LRH barrel and accuracy was fair. I plan to try the 320 gr REAL next trip to the range, and hopefully it will be better.