The Original CZ Forum
CZ PISTOL CLUBS => CZ SP-01 and variants => Topic started by: glen455 on September 05, 2020, 09:21:23 PM
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I loaded some federal small rifle match primers into just brass. Test fired and 18 of 20 went off all appeared to be seated properly. I then ordered CZ extended firing pin and reduced spring test fired just primers and everything seems good. I do not have a problem with a more powerful hammer spring = more trigger pull weight? for reliability. Just wanted to ask here if anyone has experience with small rifle primers. Hammer springs. Thanks
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With a 13# hammer spring and extended firing pin, I have not had any problems setting off SRP in my SP01 Shadow
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Sorry for asking whats the stock spring weight? And how much does a x pound higher spring increase trigger pull ? thanks
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factory mainspring is in the low 20s. Dropping to the 13# (with the extended firing pin) will drop about 5# off the DA pull. YMMV
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Sorry for asking whats the stock spring weight? And how much does a x pound higher spring increase trigger pull ? thanks
It’s 20# iirc. I have used Winchester SRP on shadow 2 with an 11.5# main spring and extended firing pin without any problems at all.
With the 11.5# main spring, DA is 5# 3.2 oz and SA is 1# 9.9 oz. I also polished the trigger intervals using Professor Atlas’ polishing guide.
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thanks for the info. And just a guess never oil the firing pin ?
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thanks for the info. And just a guess never oil the firing pin ?
Never.
I wipe it dry with alcohol when I do a complete tear down.