Those are base to tip O.A.L. measurements. The TMKs have pretty long tips. The SMKs are not as long and the tips aren't as far into the rifling. I have measured the chamber and set the seating depth accordingly.
When I reload, I actually measure all my loads from cartridge base to ogive so I can be sure I am creating a consistent jump.
I publish the data with the base to tip (O.A.L.) measurement to allow readers to compare with the SAAMI recommended O.A.L.