SP01 recoil spring and cycling

[ipsc1]

I've found that my Sp01 requires hotter ammo to cycle reliably that my 85C. I've always run 147 grain bullets at 870-890 fps, but I'm finding that I'm bumping up my load to find a level at which stovepipes dissappear. It looks like I have to go to a power factor over 135.

Is this the same experience as others are having? The slide to frame fit seems to be pretty smooth so I'm assuming its teh mainspring causing this.

thanks, cliff

[Walt-Sherrill]

Would it be worth while to try a light recoil spring?  Seems like that would have the same result.

[Denis-Altuna]

Hi cliff,
I'm shooting IPSC with SP01, and the original recoil spring was so heavy that I change for a lighter onen from the 85 model. I shoot 115 gr bullets and this couple works very well. The gun is not moving and sights stable.
I have as wel a 16 pounds main spring from wolff.
You can continue to shoot 147 gr. With this load your cartriges are probably shorter than with 124 or 115 gr, due to bullet profile. Wth 115 grs you can make bullet a little bit longer.

Denis

[Stuart]

I went to a lighter mainspring and recoil spring in both my SP01 and 75b..

seems to work fine with good ejection..I am shooting a PF of about 128-130 with a 124gr bullet..

my 75b has a JackAsh guide rod and wolffe recoil spring..and my SP01 has a FLGR with a wolffe recoil spring..

[Matthew Mink]

For my SP-01 that I use for competition, I use a standard spring from a 75B, with the stock SP-01 plastic rod.  The gun runs 100% with this setup.  I think the cause of stovepiping would be the heavier slide over the 85 Combat.

[ipsc1]

thanks, I was afraid those would be the answers I got. I've resisted changing springs as the SP01 spring is flat spring wire and my 85 uses round spring wire, and it would be obviously not the correct one and thus illegal, as far as I can determine, in IPSC competitions. and I don't want to go to Ecuador to be bumped into standard.

cliff

[Matthew Mink]

Why would it be illegal for IPSC?  You are using a factory part.

[Unregistered(d)]

Guys,
There is a thread on this over at The IPSC Village under
Handguns. Dave.

[Matthew Mink]

So all we need to do is somewhere list that the 75B spring is an option for the SP-01?  That's easy enough to do.

[ipsc1]

If CZ could do that it would be great. As far as I can see on either the CZ or CZ USA sight there is no mention of springs. And it looks like the rule of thumb being used is, if not specifically mentioned then it is not allowed.

and its one thing to call my dealer and have him say that I can use the 75 springs, and another for CZ to list their recoil springs as interchangeable across the entire 75/85 family. and its the second thing that we need.

If you guys could also get them to list the competition hammer as an option for the same group of pistols at the same time, that would be really sweet.

Cliff Meek

[Walt-Sherrill]

The SP-01 is a CZ-75B.  It just a special variant.  That's why folks are telling you that the springs are OK.