I PURCHASED SEVERAL HUNDRED CAST BULLETS FOR MY 455 SMITH AND 455 WEBLEY. THEY WERE TO BE 265 GN RN HOLLOW BASE. THE SHAPE IS PERFECT BUT IAM CONCERNED WITH THE WEIGHTS. THE BULLETS RANGE FROM 275 GNS TO 315 GNS. THE LENGTH RANGES FROM .852" TO .914" . THE EXTRA WEIGHT IS DUE TO THE DISTANCE FROM THE BASE TO THE FIRST GREASE GROVE. THESE DISTANCES VARY WITH WEIGHT. EXAMPLE HEAVIER BULLETS THE DISTANCE FROM BASE TO GROVE IS LONGER. HERE LIES THE PROBLEM, THIS SITUATION CAN'T WORK FOR GOOD ACCURACY. I WAS THINKING OF TRIMMING THE BASE TO ARRIVE AT THE DESIRED WEIGHT. LOTS OF WORK, BUT CAN BE DONE, ANY OTHER SUGGESTIONS. WEIGHT DIFFERENCIAL OF 45 GNS.