For those that have shot cast boolits in your M1a, I need your experiance. I have my rifle zeroed at 100yds with a jacketed 150gr. HPBT at 2700fps. After reading BruceB's sticky, I have my first load with a 150gr. cast boolit at what should be about 1850fps or therabouts. Without touching the sights which are set for the jacketed load, about where would my point of impact be in relation to the target when shooting at 50 yds? I am looking to at least be on paper so I don't shoot up my test loads just getting it close. Any help is very appreciated! Thanks----