I am by no means a gunsmith, or expert here. What I have read is cutting a barrel down (if not done correctly) can affect your pattern. The forcing cone in the barrel could be shortened, changing the pattern. You have a tight shooting gun there with your shot and choke combo, you could very well lose that if you change the barrel length. I would pm SumToy and get his opinion on this, he is a renowned gunsmith that would be able to give you solid advice. Good luck....