CaliforniaPiplinr,
The distance to the lands needs to be measured for your specific rifle. Here is what you can do. Seat a bullet in a case long. So long that when you try to close the bolt on the round you cannot. The bullet is engaged with the rifling and at this point is too long for your chamber. Now in very small increments seat the bullet further into the case and after each one see if your bolt will close. Keep doing this procedure until you can close your bolt with some slight resistance. At this point, your bullet is engaged with the rifling. Take a COL measurement of this length and make note of it. Now, try seating your bullet .010 to .020 shorter than this distance. This should give you a good place to start. Seating close to the rifling increases pressure compared to the same load seated further from the rifling, so start low and work up as usual.
Sometimes when doing this you find that the loaded round won't fit your magazine. If that is the case just seat so the round functions in the magazine and get to work working up a load. I doubt this will be the case with the 75 v-max, but you never know. Hope this helps.