I agree completely. Otherwise, I would have built myself one of these already. This particular guy is a very skilled marksman and uses a Lazer rangefinder. After he had chrono'd his loads, I put the information into my Exbal program and printed him out a trajectory chart. He later confirmed the 500 yard drop figure at the range; and since, I understand, has just trusted the chart.

I really don't know about an exact pressure, other than there doesn't appear to be any overt signs and the primer pockets are still tight. The 180 grain bullets he tried intially could be stoked up to about 3450 - about normal for the caliber. And regular 150 grain bullets were getting warm at about 3750 - also about normal. It has to be this NP3 coating.

I have used this coating in the past to plate the internals of Colt 1911 match guns.
I could take a Series 70 Colt - tune the trigger to 3.5 lbs - remove the hammer, sear, and disconnector - send them off to Robar for NP3, and reassemble the gun later. The trigger pull would typically drop to about 2 lbs. And the stuff is hard enough to last for thousands of rounds. I guess that's the problem as well - its so hard and slippery that something else has to give - that being the steel of the barrel.