July, 1922 Outdoor Life
https://archive.org/details/sim_outdoor-life_1922-07_50_1/page/48/mode/2up
16 gauge with DuPont Bulk. Plus 10 - 14%
7/8 oz.
2 1/2 Dr. Eq. = 7,325 psi
2 3/4 Dr. Eq. = 7,728 psi
1 oz.
2 1/2 Dr. Eq. = 7,930 psi
2 3/4 Dr. Eq. = 8,400 psi
1 1/8 oz.
3 Dr. Eq. = 11,670 psi


August, 1922 Outdoor Life
https://archive.org/details/sim_outdoor-life_1922-08_50_2/page/120/mode/2up
20 gauge with DuPont Bulk. Plus 10 - 14%
7/8 oz.
2 1/4 Dr. Eq. = 10,550 psi
2 1/2 Dr. Eq. = 11,715 psi
1 oz.
2 1/4 Dr. Eq. = 12,029 psi
2 1/2 Dr. Eq. = 13,373 psi or about 14,750 psi by transducers

28 gauge Plus 10 - 14%
5/8 oz. 2 Dr. Eq. = 8,714 psi
3/4 oz. 2 Dr. Eq. = 10,259 psi
3/4 oz. 2 1/8 Dr. Eq. = 10,998 psi
7/8 oz. 2 Dr. Eq. = 12,387 psi