Hi i do not like the X Bullets i believe they do not work aswell as conventional bullets and the only way they are of use is if the cartrige you are using is marginal for the game. I have a Model Seven SS and use the 139gr SST's and 140gr Cor-Loct with CCI Mag Primers and have pressure at 63.5gr H4831SC it shoots verry well with a Limb Saver Barrel Deresonator shooting under 1/2" at 100 yards i prefer running 160gr Australian made Woodleigh Bullets or Speer grand Slams with 66gr H1000 it has similar velocity as 60gr H4831sc with less pressure.
i have also used Retumbo in compressed loads with 160gr projectiles and heavier and they shoot verry well. I think if you like the 7mmsaum the 162sst or interbond and the 160gr Accubond are better for the larger animals and are better for the long shots.
Cheers Bill
Australia