I've always felt Nosler velocities ran a little high for the amount of powder called for in their loads.I trust my chronograph and don't worry too much what the book says.It's only a guide,every rifle is different and powders can vary from lot to lot too.
When using 50gn bullets and Varget in my Rem 700VLS 22/250 I get velocity around 200fps less than the Nosler manuel despite my rifle having a barrel 2" longer than the test barrel.
Some of the velocities in the Nosler manual are "out of this world" in terms of achievability.
