Not to get in the middle of things here, but a quick search of the net revealed little info. Can anybody tell me where I might be able to find what pressures were used in these early damascus guns, say around 1900. To my understanding, SAAMI didn't come to be until 1926? I would assume the proof houses had info related to pressures. Please correct me if any of this info is wrong, A reference to read on the subject would be wonderful. I have DGJ back to '98.