When the magazine is in place in the rifle, are the lips of the magazine narrower than the feed ramp into the chamber? And is it centered? Does it look like it needs to be opened up a bit? Or beveled a bit? What part of the cartridge is catching? Does it happen when you cycle the action slowly? Or fast? Or all the time?
As you can see, this has gotten me interested. I've several 700's that I use RN bullets interchangeabley with spitzers and have never had a problem so....................??
And FWIW, when I change bullet profiles, I don't rework my powder charge. Just adjust my sights if needed. But then, I don't motor my rifles at top end as a rule.