The handloads that I prefer use 255gr swc's of .452-.453 dia. The light
weight 185-200gr bullets designed for use in the 45 auto impact very
low in the revolvers I own. My bullets are purchased, not cast, hence
the dia. In general I have found that the heavier bullets give better
accuracy than the lighter ones and more consistant velocities. At 50-
60 ft. in my back yard over my bench rest of rolled up rug atop my
air conditioner I can usually see best groups of under 2".