My question is: How is the starting point of powder in a caliber determined. My Barnes reloading manual says to start at 20 grns of H110 and a max load of 21 grns for a 225gr XPB bullet. How would I determine how low I could go and still get decent accuracy. Is there any danger with going too low and having excessive pressure behind the bullet? Please enlighten me. John
BTW, I'm trying to load these for my daughter. I've already loaded my Cast Performance 300gr rounds.