I might be tempted to shoot a group with all of the magazine parts (box, spring, follower) out. But I'll bet that you end up bedding it. Before you do that, though, you might consider sending it back to Kimber to make sure there is nothing wrong with the barrel. I suspect that if you bed it, they would regard the warranty voided.
You will most definitely void the warranty if you bed it.
Before you do anything to it, send it back to Kimber with some very strong verbalization of the complaints & include some targets.
MM
