If you gun will fire them its not an issue.
Cautious is to start over, but if I was mid load of slower powder I would just switch over to them them (the really hot powders like Unique, H110 or AL8 I would drop down a bit which would probably get you to a starting load)
Of all the possible issues in reloading the primers are not the big one.
When you have that much variance between mfgs for magnum vs non and who is hotter this year than last...........
If its a full tilt boogy max load then the caution flags come out and any primer change including the same mfg needs to be looked at carefully.