Break in refers to the time needed for the seals to full seat against the housing, and for the springs to "take their set"

Yes, this basically means that for the 2000 ( est. ) shoots your velocity will fluxuate more than once it is broken in. On my palmers, I only saw a flux of +/-10 fps ( 20fps total swing ) now I'm getting about 2. Does this mean you can't play, not at all. Just chrono a little slow, and check it a few time threw out the day.