Edgar,
I would like you to share your numbers as well
!
Your point is very valid and clear when you study like, original guns next to each other they provide for an interesting discussion. For example subjects 10 and 11. Both are original guns on a 1 frame (1 28" and 1 26"). The 28" weighs 5oz less than the 26". They have similar MBWT. Yet the 28" chamber/fc measurement is .020 less. One has a steep FC and the other a more gradual one of a few thousandths.