PT,
What an intriguing question! Of course, I think we have to consider at least four factors: a) calibre, b) brass manufacturer, c) type of propellant, and d) weight of the projectile. I, for instance, am deeply concerned with this problem as for the newest cartridge I shoot . . . the .338 Lapua Magnum. But I'm still not even close to a conclusion after having fired a 200 piece allotment 5 times at pressures I believe are pretty much full (industrial) strength. The load incorporates a 250 grain Match HPBT and 89.5 grains of Vihta Vouri N560. The MV averages 3065 fps from a 28" Lothar Walther barrel. What are you shooting?
Regards,
David