We have good data for the pressures of turn-of-the-century 1 oz. 16g Bulk Smokeless Powder loads
2 1/2 Dr. Eq. (1165 fps) was about 7000 psi;
2 3/4 Dr. Eq. (1220 fps) about 8500 psi;
3 Dr. Eq. was about 10,000 psi
Dense smokeless would be higher.
IMHO if barrels, after a proper evaluation, are felt to be unsafe at 8000 psi, they are likely unsafe with any hunting or target load.
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