After talking to a friend, I realized he was having trouble visualizing the relationship of the chamber, throat and the loaded cartridge so I decided to try to give some folks a visual.
Below is a cut-away of a 30-06 chamber, an empty case and a 311291 boolit. Notice the highlighted red area is the "throat."
Below is the empty case sitting in the cut-away chamber.
Below is a checked, sized, and lubed 311291 boolit in the throat.
Next, the assembled dummy starting into the throat.
Next is the assembled dummy pushed into its fully seated position. Sorry... still a little fuzzy.
Lastly, note the end of the throat is indicated by the light red line in the flat above the chamber and how the entire throat is nearly filled by the boolit.
I hope this helps some fellows to understand what we are talking about when we talk about "filling the throat."
BTW, notice the chamber cut-away has an area highlighted with red marker (in the first picture), commonly called the "throat."
Edd
P.S....I tried to get a couple pictures of better quality but still have one that is a little fuzzy. Hope you can still get the picture...pun intended!
2/6/15: I was able to find the pictures on an old hardrive and up loaded them into my Photobucket account. Apparently Photobucket has some issues and my original links went dead. Hopefully everyone can make use of the stickie in its restored state.