The Firing Line Forums

Go Back   The Firing Line Forums > The Skunkworks > The Smithy

Reply
 
Thread Tools Search this Thread
Old July 9, 2018, 08:18 PM   #1
jski
Senior Member
 
Join Date: March 5, 2016
Posts: 374
Best choice of Wolff replacement springs for an Polish P-64?

Just ordered a Polish P-64 and intend to order a complete set of Wolff replacement springs. Of those listed below, which would make the best choice?

Hammer Spring Ratings: Reduced Power...: 17, 18, 19 & 20 Lb.

RECOIL SPRINGS are available with load-rated specifications. Each load-rated recoil spring package includes an extra power firing pin spring.
Reduced Power...: None Available
Factory Standard.: 18 Lb.
Extra Power.........: 20 & 22 Lb.

Last edited by jski; July 9, 2018 at 08:24 PM.
jski is offline  
Old July 9, 2018, 10:59 PM   #2
jski
Senior Member
 
Join Date: March 5, 2016
Posts: 374
Since the P-64 uses a blowback design, it is the force of the fired case that drives the action. Consequently, the recoil from the fired case drives back both the recoil and hammer springs. If I reduce the hammer spring weight, I then need to increase the recoil spring weight, correct?

So I comes down to what is the best combination of recoil and hammer spring weights?
jski is offline  
Old July 10, 2018, 12:02 PM   #3
T. O'Heir
Senior Member
 
Join Date: February 13, 2002
Location: Canada
Posts: 12,453
Buy the Hammer Spring Pak and the Recoil Calibration Pak get all or 'em. The whole thing will depend on what ammo you use.
__________________
Spelling and grammar count!
T. O'Heir is offline  
Old July 10, 2018, 04:33 PM   #4
Doyle
Senior Member
 
Join Date: June 20, 2007
Location: Rainbow City, Alabama
Posts: 7,167
I've owned 2 P-64s. Both did very well with the extra power recoil springs. It tamed a little of the "snap" from the slide bottoming out. As to the main spring, the first one was perfect with the 18lb spring. With the 2nd one, the 18lb was still a little too stiff so I went down to the 17lb spring.

However, just be aware that the main spring also holds the magazine latch so if it is too week your mag will not stay in properly.
Doyle is offline  
Old July 12, 2018, 12:00 AM   #5
jski
Senior Member
 
Join Date: March 5, 2016
Posts: 374
Doyle,

So the 22 lbs recoil spring worked well? Or back off a little to 20 lbs?
jski is offline  
Old July 12, 2018, 07:32 AM   #6
Doyle
Senior Member
 
Join Date: June 20, 2007
Location: Rainbow City, Alabama
Posts: 7,167
22lb recoil spring worked very well. The only time it didn't work well was when I bought some remanufactured ammo at a gun show. It wasn't quite as "stout" as factory loads. Even then, it shot just fine - it just didn't lock open the slide after the last round was fired.
Doyle is offline  
Old July 12, 2018, 10:43 PM   #7
jski
Senior Member
 
Join Date: March 5, 2016
Posts: 374
Doyle, thanks, you've been very helpful.
jski is offline  
Old July 13, 2018, 07:39 AM   #8
Doyle
Senior Member
 
Join Date: June 20, 2007
Location: Rainbow City, Alabama
Posts: 7,167
Since you appear to be new to the P-64, let me offer you one piece of very valuable advise. Don't attempt to secure that grip screw by tightening it down hard. You WILL break the plastic grip panel. Use a drop of loktite or fingernail polish and tighten it just snug.
Doyle is offline  
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -5. The time now is 08:21 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2024, vBulletin Solutions, Inc.
This site and contents, including all posts, Copyright © 1998-2021 S.W.A.T. Magazine
Copyright Complaints: Please direct DMCA Takedown Notices to the registered agent: thefiringline.com
Page generated in 0.04564 seconds with 10 queries