It took in the neighborhood of 5000 shots to break in my Winchester 101 Trap gun, and then it was just loosening up. Another 10,000 and it was truly broken in. I shot a fair amount of trap, and still, it was 6 months or so (the first 5000--I wish I could shoot 15,000 in 6 months!). Just be patient, it will loosen up. That is the sign of a quality gun. In the mean time, keep it well lubricated. I and many other volume shooters really like Lubriplate. Great stuff.