I picked up some red dot (all they had) and looking on my lee load-all charge table shot=1oz and 2 3/4 shell......( 2 3/4 1150fps) i use bushing .155 (3 1220fps) i use .163 bushing and (3 1/4 1290) I use .173....i just want to make sure i understand ....all 3 bushing sizes are safe loads......there just more power and speed for the slug. thanks for the help.....ed