Mag version is suppose to be design for higher velocity. I have used both and honestly didn't notice any difference in performance. I stuck with the XTP's b/c they are cheaper. The onlygameI have shot with 300gr xtp was a black bear and moose...both died effeciently from one shot. I have used the 240 -.43and 250 .45xtps for a number of deer, also never needed a second. My loads were 85 - 100 gr with 240/250 xtp's, depending on the rifle.
Come to think of it,savage shooters say stay away from the mag XTP version,one would think if velocity is the reason for the Mag version then they should be the choice in this weapon where velocities are typically higher then sub shooting inlines????

Never shot Mags in the savage, doubt i ever will I have a good supply of the regular xtps