im loading 223 brass ......i cut to 1.755 on the brass......using ss109 62gr fmjscbt.... some of the ss109 differ in size so i when i seat the bullet somtimes my col is not the same......... i have it set to crimp on the middle cannelure......do i need to separate the bullets by lenght or is there another way??? also what is a good col for 223 ammo