Yes
Dang, the data given in the manuals is EXACTLY as shown for the rifle that was used for the load in question.
IF you seat the bullet deeper, with all the same components, then you elevate pressure, and this will change the test rifles data, and your rifle's performance with that data will be different no matter what.
These are only guidelines.............
If you seat the bullet OUT further, you will decrease pressure, and usually velocity.
I think this answers you question.