Nicely done Chuck.
I would caution anyone reading this to not use this information to solve the wrong puzzle.
It is purely a means to measure specific chamber pressures within a known chamber/barrel structure.
As long as everyone doing these tests is using the same technique, error would reduce to calibration method. Which would only matter in comparison, not in individual application.
William's measurements (as long as performed consistently) can be different than Chuck's or Tom's, but should only differ by the zero points each uses.
I did not like the inference that all steel alloys behave so similarly, I felt that was misleading. It would imply that early fluid steel barrels behave substantially similar to modern vacuum arc steel barrels. At least by hopeful inference.
I'm not so sure that is applicable here.
So, the test fixtures by virtue of modern metallurgy can be seen to behave similarly, holding that variable approximately at 0 for testing purposes, but I don't believe anyone wants to mistakenly imply that about old barrel steel alloys.
Yes?, No?, did I misread?
