Just doing a little speculating here...
Buddy of mine runs a 7mmSaum with 160s...a 22" Model 7. Gets 3000+ but with R-22. I've run a 24" 300Winnie with 180s at 3150 with R-19 and R-22. When loaded with H4350 the top end for 180s dropped a bit to @3050 before pressure showed.
The velocities for each of the 2 guns in this thread are showing velocities that are at the top end of the 7mmRM and 300Winnie range (the Shamu's larger capacity cousins) for the same wt bullets. And being gotten with a powder in the burn rate range of the 4350s. JMO, YMMV, but I'd speculate the loads are a tad on the warm side, but not nuclear hot. Maybe factor in the "new technology advertised and they're not hot at all. However, a hot day could make them that way, temp insensitivity be damned! And they're about 75fps faster than what that published data in the link post above showed.
