Spring Rate of Tactical Sports .40 cal

[Hidef1080]

Does anyone know what the recoil spring rate is for a stock CZ 75 Tactical Sports .40 cal?
Also, if I wanted to go with a ?custom? spring [heavier than stock] where would a be able to order one?
I've checked Wolff Springs and both CZ-USA and CZ Custom but I did not see any recoil springs for the Tactical Sports.

Would I even need a heavy spring if I shoot 165 at 1050fps?

My fear is cracking the frame.
When I pull the slide back it just feels ?light? to me.
Plus my gun does not have a buffer so I don't want to shoot it just yet if there is a chance I may damage it.

Any input would be appreciated.

[burningsquirrels]

first, never use a buffer. it's junk.

second, did you call them directly? they may be able to help you. wolff gunsprings may also be able to help.

[Stuart]

Springs are the same as in the 75B.
the frame won't crack, the slide stop takes the brunt of the force.
also consider, too heavy of a spring will put excessive force on the slidestop from the other direction.

I usually run a 12# to 14# spring in a gun with a major load and ejection pattern and front sight recovery will determine which I end up going with.

[burningsquirrels]

I usually run a 12# to 14# spring in a gun with a major load and ejection pattern and front sight recovery will determine which I end up going with.

+1

[Hidef1080]

Outstanding!
I never knew that the slide stop took on part of the energy on the slide moving backwards.
I always thought that on the way back the recoil spring was the only thing between the slide and frame which is why I wondered about a heavier spring and buffer.
Good to know!

Thank you all for the input.