At 2.260" OAL I'm still more than .050" off the lands with 123gr ELD-M bullets. I run out of mag length (@2.296") before I can get into the lands. I shot a spread of bullet seating depths to fine tune the load, and surprisingly 2.260" OAL (1.690" to the ogive) had the least vertical dispersion.
Something I'm still scratching my head over is that I also reset the bullets in a box of Hornady Black ELD-M factory ammo with the seating depth on my die unchanged, and the rounds all came out .010" shorter (OAL and to the ogive) than the rounds I had just loaded with the exact same bullets. I'd be surprised if there was that much variation between runs of these bullets but I'm coming to believe that must be the case.
Something I'm still scratching my head over is that I also reset the bullets in a box of Hornady Black ELD-M factory ammo with the seating depth on my die unchanged, and the rounds all came out .010" shorter (OAL and to the ogive) than the rounds I had just loaded with the exact same bullets. I'd be surprised if there was that much variation between runs of these bullets but I'm coming to believe that must be the case.

