Assuming you are talking about dispersion (group size), as the presence or not of a choke will by definition have no affect on accuracy, then the answer to your question will depend entirely on the pellet/barrel fit and the bore consistency of the rifle being modified. If the barrel bore is consistent and the pellet fit is good then removing the choke will make little or no difference. If the bore is not consistent or the pellet fit is not perfect then removing the choke will make a difference. So there is no single answer to the question.