Originally Posted by wyomingblizzard
My understanding of freebore is the distance of the ogive to the lands
No, this is JUMP(roughly).
Freebore is set by the chamber reamer, but there are several common ways to consider it:
-Chamber neck end to land begin
-Chamber end to land begin(lead)
-Same references but to ogive contact(as set by ogive radius/type & leade angle)
The value that matters to me is seated distance to land contact -per bullet.
Predicting this up front for filling out a reamer print, etc, is not very easy. Best done with a program, and reamer makers can do it for you.