Factory SP01 Shadow Spring Weights

[fischeac]

Just picked up a factory SP01 Shadow (cz 91154). Shot it yesterday and I am hooked. Can someone tell me what the main spring and recoil spring weights are on my gun? Its brand new from the factory and the descriptions I have read all just state "reduced power main and recoil spring." Would like to know what they are so I can decide whether or not to purchase even lighter springs to try out.

[bafsu92]

I'm not positive but I think it's a 15# hammer spring & 13# recoil spring. You want your hammer spring between 11.5-13# if you're running the (CZC or CGW) extended firing pin and want to set off any primer (your results may still vary with the 11.5# and certain primers. My gun sets them all but others have reported different results) if you don't run an extended FP you want no lower than 13#. For recoil spring on my first Shadow, now my backup that I did all the work on I run a 10# but on my CGW built full competition package it has a 12#. David at CGW said as long as it ran good with that (and it does) there's no need to go lower and your gun takes much less of a beating. I've got 10, 11 & 12# springs in my bag and 8.5, 11.5 & 13# hammer springs. I'll try out different combos with different loads just to see what may work and to definitely find what won't.

[bigdave24]

I'm not positive either, but if cz custom worked it over, it probably has a 13 lb hammer spring and 11 lb recoil spring.

[fischeac]

Thanks for info, much appreciated.