Judging from the picture of the bullets, it's pretty clear that the bullet has to be seated with the mouth of the case somewhere between the lube groove and the shoulder of the bullet.
So, how about seating the bullet at the max distance where that occurs?
Then see if it runs in the magazine ok, and the loaded round chambers ok.
If not, shorten the loaded round a bit until it does.
As for the crimp, use the least amount that allows reliable feeding, just enough to provide some grip of the case to the bullet.
Hope this helps.
Lock the doors, they're coming in the windows.