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Old July 5, 2013, 01:08 AM   #14
Jimro
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Join Date: October 18, 2006
Posts: 5,450
Bart B., you aren't the only one to observe that a weak firing pin can open up groups, I've not seen it myself (don't shoot Palma though). A weak firing pin spring can delay ignition by a few milliseconds, which is time for the shooter to wobble. I know of a couple Palma shooters who replace firing pin springs before the start of the season.

Jimro
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