I handload the majority of my .45 auto, and one in particular is giving me problems. My 200gr SWC lead load (the black bullet from precisionbullets.com) prints roughly 2-3 inches low and 1" left at distances as short as 15yds. Before anyone attacks my marksmanship, please note that my other loads (230gr fmj and 185gr swc match) print at exactly point of aim. I have gone so far as to verify this deviation from a pistol rest at 15 and 25 yards. Test pistol is a Colt Combat 5" with a match barrel. Any ideas would be appreciated.