Yep.
Another thing I've done to get an understanding of the bullet/lands relationship is make a dummy cartridge with a fully sized neck, seat a bullet to max OAL, black it with a sharpie, chamber it, look at rifling marks, then decrease the OAL in .005" increments, and check the rifling marks at each stage.
It gives you an understanding of jamming the bullet, just a kiss/partial contact, and no contact.
