The trigger pull on my 220 I just bought is tough and somewhat uneven. When comparing the 220 to my 229 9mm which had around a 10lb pull it feels quite a bit tougher. I took the gun to the range and it was extremely accurate, but I would like to make the DA pull a bit easier.

Any reason in particular the 220 feels that much tougher? It has the older type hammer spring.

If I change the hammer spring to a Wolff 19lb spring will the difference in pull be quite a bit? Will it make the DA pull a bit smoother?