John,
I agree that all guns should be checked for barrel wall thickness and overall condition.
You made a good point about the smokeless dram equivilant pressure being different that of black powder. The proof table used by Parker is on page 515 of The Parker Story.
Caution is good and no one is suggesting feeding their Parker a steady diet of SAAMI Maximum pressure loads. The guns however were built to take those pressures. They are however about 100 years old so one should be careful and limit the amout that we punish them.
PS: Bruce I sent you my email and snail mail addresses if you would be so kind as to send me the table?
Respectfully,
Mark
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