CG (Center of Gravity) & CP (Center of Pressure) and their relationship.

...WHAT ?

While this is not a frequently asked question to a newbie, once you step into boolit design, or more likely, are ordering a custom mold for a specific rifle, these are a couple of things to know about.

It's explained well in this thread:
http://castboolits.gunloads.com/show...meter-question