Kiwi_bloke: Yes, 2000 Ft/s is OK, but if I'm not mistaken Hornady recommends 2000 Ft/s as minimum for the Interlock 270 grain RN, and I have a feeling I'm well below that at 100 yards out or so. I'm not expecting too much, but getting up towards 2150 would be nice.
And yes, you shouldn't need to force open the bolt at that speed, but I'm now convinced that it's the welding damage that causes this. Will try to even out some of the worst spots in the chamber myself during the weekend.
A lighter bullet could also be an option if I can find one that works. My rifle is one of the ones you mentioned that cannot feed pointed bullets. The magazine locks up completely and has to be taken apart to even get them out.
One thing is clear, the rifle is not going anywhere, it's staying in the family. Too bad though that our crappy gunlaws here in Sweden severely limits the amount of guns you can own. You really don't want a rifle taking up a place in your gun cabinet if you can't use it...