What load are you shoot out of of Tradition Vortex mag.
I do not have a Traditions but I shoot a lot of Bloodlines...
Loads - 110 grains T7-3f
Cap - RWS Dynamit Noble 1075+
Sabot - either the Red Knight or the Orange MMP - .457-.458x50 sabot.
Most often I use a .458x300 grain bloodline bullet, but I am suggesting to you the .458x275 gr. Bloodline is IMO - the best all-around bullet I have ever used.

This is the 300 grain but the 275 looks just like it.