lubed chamber, huh?

[tomswede]

This topic is somewhat covered in the Rifle Accuracy Facts book. I can't recall perfectly but it seems like there was only 1800lbs of bolt face thrust in a meticulously clean case and chamber and somewhere around 6500-7000lbs with a lubed case. Don't hold me to these numbers but I think they are pretty close.

It’s act covered in detail. When it comes to bolt thrust a lubed case is the same as a zero headspace case. Any reduction in bolt thrust is taken up by case base stretch (Hookes law applies, no force without strain).