Agreed, sometimes a rifle needs more powder for nominal pressures and speeds. I've got one 338 WM with a chamber .002 fatter than the specs just ahead of the belt. (Fired cases measure .5163" in mild and hot loads.) In a sense it is a 'factory improved wildcat' that needs one or two grains of...
I've noticed a change in Nosler load data that is so large as to need discussion. The 250 grain NP had previously been listed at 2780fps with 71.5 grains of H4831. That was always considered a bit on the 'hot' side, since the 338 WM was originally factory loaded to 2700 fps with 250 grain...
The new monolithic solids tend to be longer than older lead-based bullets. While the flatnose has been found to enhance straight line penetration the twist of the barrel is also important. Some rifles require careful rethinking on this issue.
for example, the CZ550 is a popularly priced rifle...