The Firing Line Forums

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

Reply
 
Thread Tools
Old April 2, 2010, 06:35 PM   #1
RickE
Senior Member
 
Join Date: December 18, 2009
Location: Kirkland Wa.
Posts: 516
PPK issues

I have written before about FTF,FTE issues with my Interarms PPKS. I polished the slide rails, the load ramp, and the entire chamber. I greased up the gun, and dis assembled the extractor and safety mechanism to be sure it was all in order. It was clean, all parts present, and the detentes in the safety were good. It was slipping into a partial, or full safety position during firing. I just ordered a full set of Wolff springs. They come in 14,15,16 & 17 lbs. The factory spring is 20lbs I believe. I got 1000 rounds of American Eagle at what would be $13 a box of 50. I figure they may not be a very strong load, requiring a weaker spring.

MY QUESTION
(finally) is... which spring would you start with? The 17, and then the 16. 15 etc? Could 3 lbs make much of a difference? And if I step up to a hotter load (Cor-Bon), is a lighter spring going to cause a problem than?
RickE is offline  
Old April 4, 2010, 10:57 PM   #2
Haycreek
Senior Member
 
Join Date: April 28, 2002
Location: West Texas
Posts: 151
Use the 17 , if the problem continues, go to the 16 recoil spring, most likely the ammo is loaded light, and you ar short cycling. or use hotter ammo, ie Sellor and bellot or other premium ammo.
__________________
Safe Shooting !
Haycreek is offline  
Old April 5, 2010, 02:36 PM   #3
James K
Staff
 
Join Date: March 17, 1999
Posts: 19,647
The American made Interarms PPK/S had some Walther-made parts, including the recoil springs, which were to German specs for the hotter 9mm Kurz load they use. The guns frequently have problems with US ammo. I have corrected the problem by rolling the original springs on a belt sander, but replacing the original with a lighter spring should do the job as well.

Jim
__________________
Jim K
James K is offline  
Old April 6, 2010, 02:37 AM   #4
radom
Senior Member
 
Join Date: January 21, 2000
Posts: 1,296
I have had the same issues with US ammo in the things too. The loads are a bit week to make the slide snap back and rebound well plus the profiles of the HPs like to hang and catch on the edge of the chamber. Stick with the hotter SD loads that use a trunicated cone type HP and break the edges on the chamber with some croakus cloth so it has a bit of a sharp bevel and they will work just fine.
radom is offline  
Old April 6, 2010, 07:28 AM   #5
CowTowner
Senior Member
 
Join Date: October 17, 2007
Location: Cowtown of course!
Posts: 1,199
You may want to add some maroon boxed Fiocchi ammo to your list. The Italian made is hotter than the US made blue box.
__________________
NRA Chief Range Safety Officer, Home Firearm Safety and Pistol Instructor
"There are three classes of people: those who see, those who see when they are shown, those who do not see."
Leonardo da Vinci
CowTowner is offline  
Old April 8, 2010, 01:37 PM   #6
RickE
Senior Member
 
Join Date: December 18, 2009
Location: Kirkland Wa.
Posts: 516
Thank you all, good advice!

Rick
RickE is offline  
Reply

Thread Tools

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 05:02 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
This site and contents, including all posts, Copyright © 1998-2014 S.W.A.T. Magazine
Copyright Complaints: Please direct DMCA Takedown Notices to the registered agent: thefiringline.com
Contact Us
Page generated in 0.07876 seconds with 9 queries