Kimber .22 Conversion....Misfire help needed.

[sasquatch981]

So I purchased a Kimber .22 conversion for practice and I love it. However, I would say 1 out of every 10 rounds will misfire. I manually cock the hamer back and pull the trigger again and bang. So my question is: if I put in a heavier mainspring, will that allow the hammer to fall with more force? Are there any other ideas I can try.

I have tried the following ammo with the same results.

American Eagle Copper Plated

American Eagle Lead

Federal Lead

Eley Sport Lead

Winchester Wildcat Lead

Fiochii (sp) Copper Plated

CCI Mini Mags Copper Plated

Thanks

[bompa]

I was getting light strikes with the Cienier kit and Federal bulk ammo.. Went to a 19lb main spring and things improved immensely..Things go bang when they should..

[DougCarden]

Off the top of my head.....up the mainpring, or reduce the firing pin spring.....I would imagine the kit was set up for factory 1911s.....which would have a 23lb mainspring if built to regular specs.......

Hope that helps some,

DougC

[LPatterson]

Years ago the Wilson (Ciener) conversion kit came with a mainspring to be used when the slide was replaced. My solution was a S&A magwell for .45 and the original mainspring housing for the .22.