P-01 Ejection Distance questions

[PizzaPizza]

I have a P-01 with a Cajun Gun Works Pro Package installed.  I don't think it matters, but I use the 15# Main Spring rather than the 13#.  *I started another thread on this in the CGW forum.   

During my last trip to the range, I noticed my brass was landing quite far away.  I had a friend stand and mark where it was landing.  I stepped it off and figured it was about 12' - 14' (w/o a tape measure) from the gun.  I plan on going to the range this week and will bring a tape and try to confirm this measurement. 

I've read that the P-01 should ideally be sending the brass between 6' - 8' to have a properly "balanced" recoil/slide cycle.

The ammo I was using was Super Vel "Certified Select" 115 and 124 grain FMJ's.  The 115's run at about 1150 FPS and the 124's run 1050 FPS.  I'm going to bring some of my Defensive Rounds to the range this week which include Federal 124 Hydra-Shok which operate at 1120 FPS. 

Am I right that to get my brass ejection distances "timed/balanced" to land in the 6-8' range I would need a stiffer spring than the stock spring which is 16#?  I suppose it's cheap enough to get a few different springs to test things out and see how it feels.  Any thoughts on whether this is necessary?  I haven't noticed any issues with recoil that I'm trying to necessarily solve, but had read about the ideal range of brass ejection and possible "damage" if the brass was being ejected too far (past 12').

I'll update this post after I get to the range again, but wanted to see if anyone had advice on if I needed to worry about the Recoil spring, or even consider trying to dial it in?

Thanks in advance...

[Wobbly]

• 6 to 8 feet is a general guide, a "rule of thumb".

• The slide's rearward movement is slowed by the recoil spring and the hammer spring working together. You didn't say anything about the hammer spring.

• I see nothing wrong with SD ammo cases being thrown 12 to 14 feet. If you were shooting "target" ammo (like UMC or home loads) and it was going that far, then I definitely would be.

• It's important to "practice as you'll fight", but one or two mags during each range visit might be enough. I proabably wouldn't be shooting hundreds.

[PizzaPizza]

Wobbly,

Thanks for the reply.  I did mention that I am using a 15# hammer spring.  CGW installed the 13# originally, but I was having some light strikes and we settled on the 15# and I no longer have any issues with that.

As for SD ammo landing 12-14 that makes sense as it's not like I would be shooting it that much at the range. 

The ammo I was using that day was range ammo made by Super Vel.  The 115 Super Vel had a velocity of 1150 FPS.  Looking up Remington UMC 115 the velocity is 1145 FPS.  Blazer 9mm 115's are at 1125 FPS.  All of this ammo is relatively close/normal for range ammo. 

It seems odd that the P-01 recoil wouldn't be balanced for this?  Is this normal? 

Again, thanks for your input.

[Wobbly]

Thanks for the reply.  I did mention that I am using a 15# hammer spring. 

You're welcome.

I pasted your reply into a word processor to look for the word "hammer" since both my eyes just got operated on. Neither of us found the word "hammer". Just saying.

[PizzaPizza]

Ha!  You got me.  I looked again and saw I said Main Spring!  Where I come from "Main" is a Hammer. haha

I have an update if anyone is interested/has any further thoughts on this topic...

At the range today I set up a magazine with the following rounds:

I fired 2 of each round:
 
Federal Classic 115's w/velocity of 1160 FPS - Ejection Distance:  15'
Federal Hydra-Shok 124's @ 1150 FPS - Ejection Distance:  15'
Super Vel "CS" 124 - 1050 FPS - Ejection Distance: 15'
Super Vel "CS" 115 - 1150 FPS - Ejection Distance: 13' & 15'
Freedom Munitions 115's - Ejection Distance:  13' & 15'

I also loaded a mag and shot it through my friend's P-01.  He has a more stock version with only the 13# HAMMER Spring and Extended Firing Pin installed..

Federal Classic 115 HP @ 1160 FPS - Ejection Distance:  15'
Freedom Munitions 115 FMJ  - Ejection Distance:  15'
Super Vel "CS" 115 - 1150 FPS - Ejection Distance:  12' & 14'
Super Vel "CS" 124 - 1050 FPS - Ejection Distance:  9' & 13'

Looks to me like this mix of range ammo and 2 options for HD rounds are all ejecting into a similar zone which is quite a bit further than what I read (6' - 8') should be the normal range.  I am not trying to solve the feeling of the recoil.  It feels quite balanced to me. 

Do I need to consider a stiffer spring to "tame" the ejection a bit for function/durability issues?  Or, is the gun robust enough to handle this?

Thanks again in advance!

[Stanseven]

Before doing anything more, I would try another spring.  They can get weak or you might have gotten a mislabeled one.

[PizzaPizza]

Before doing anything more, I would try another spring.  They can get weak or you might have gotten a mislabeled one.

Any recommendations on what brand of recoil springs for the P-01?  The stock spring is 16# for the P-01, right?  I've seen that Wolf Springs come in Extra Power @: 18, 20, 22 lbs.  They aren't expensive, so I guess I can order a few and try them out. 

One thing to note is that my friend's P-01 was launching about the same distances - definitely further than the 6'-8' distance that is supposed to be standard. 

Thanks!

[Stanseven]

If your only concern is how far the ejection distance is,  I wouldn’t worry.  A stronger spring makes racking the slide a little more difficult.  Plus the slide will snap forward quicker which makes sighting a follow on shot more difficult.  But springs are inexpensive.  Buy a few from Wolf and try them out.  If you do, let us know how it turns out

[SI VIS PACEM PARRABELLUM]

I have CGW Pro Packages in all my CZ's and I use the 15lb hammer spring in all of them. I also use the factory recoil spring in all of them and my ejection distances are within range. I don't worry the least if cases fall a foot or so one way or the other. If they are dribbling at your feet that's a problem and if they are being launched into orbit that's also a problem.
Unless you shoot the gun from a rest or a machine rest then any body movement under recoil also affects ejection distance.
If it's been several thousand rounds I would replace the recoil spring and see what that does.

[Stanseven]

I have a relatively new CZC P01 which I’ve only shot at an indoor range.  I assumed the ejection range was within 6-8 feet.  The brass just bounces off the barriers on the sides.  Today I stepped back and let the brass eject in the open.  They went around 12 feet.  I’m really surprised.

[SI VIS PACEM PARRABELLUM]

Where spent cases actually land and where they roll before stopping is 2 entirely different things.

[Stanseven]

Where spent cases actually land and where they roll before stopping is 2 entirely different things.

I know that.  I’m talking about where they land.

[M1A4ME]

I have no idea how far the empties from my P01 Omega, or CZ75 Compact, or P09 fly when ejected.

I do believe (just my opinion) that the farther they fly the faster the slide is moving to the rear.  The faster the slide moves to the rear might be more likely to result in some type of damage to the pistol vs. a slower slide rearward movement.

I've never broken the frame, or the slide stop or a recoil spring on a pistol.  Don't want to either.  My fears may be completely unfounded.  But I feel better.

[SI VIS PACEM PARRABELLUM]

I think guys put WAAYY more stock in this than is really warranted.

[Stanseven]

I think guys put WAAYY more stock in this than is really warranted.

Agree.  I’m very happy with my P01s performance and don’t care how far it ejects.  Out of my three CZs, and all my pistols, it’s my favorite.