Ed,
Maybe its just me and you bud, but when SAAMI says "Maximum Safe Average Pressere" I take that to mean "The posted speed limit" not "as fast as you can actually go". IOW, "Maximum Safe Average Pressure" is just that...not the absolute ragged edge. FWIW, my .280s have run 140s in excess of 3200fps...with 2 seperate loads. One was my mistake in data, and the other was a box of Hornady Lite Mag. Neither showed signs of excess pressure...unless of course you count velocity as a sign.
Personally, I do take that as an absolute sign of being in dangerous territory. JME, YMMV.
