Bottlenecked cartridges have many different means of headspacing, from using a rim—so popular among the lever-action cartridges—to the Holland & Holland belted design, to the true rimless cartridges that use the shoulder for headspacing. And while the goal for creating ammunition is to have the cartridge slip easily into the chamber, sometimes that formula doesn’t give the best possible accuracy.
If you reload your ammunition, you can control some of the dimensions, and you can give yourself an advantage in the accuracy department.
MANAGING VARIABLES AND EXPECTATIONS
First, to understand things properly, we must realize that not all chambers are cut in the same manner. Yes, our factory guns and even custom jobs do the best to keep things as uniform
