They may look a lot alike but they're just different bullets. If you treat them as such you might be able to tweak the A/bonds with either a different charge weight or o/all length to shoot as well and possibly the same POI.
I had the same sort of problem with my lightweight 30/06 but it was the B/tips that were poorer shooters and the POI was about 2" laterally and 1" vertically different.
