Ballistic between the two are close enough to the same and the 260 Remington with better barrel life.

Here would be my determining factory- barrel expectancy and if I want to buy ammo vs reloading.

If I plan to shoot under 1500 rounds out of the rifle I'd just get a 260 Remington. If I didn't reload and had to use factory loads the Creedmore gets the nod. If you handload the x47 is more versatile and will fit longer bullets at mag length given that extra millimeter of case length over the Creedmore.

As always can take my opinion and trash it or ponder. After all it will be your choice.