SA-22 Misfires - RimfireCentral.com Forums

Go Back   RimfireCentral.com Forums > >

Notices

Join Team RFC to remove these ads.
Reply
 
Thread Tools Display Modes
  #1  
Old 07-21-2021, 10:18 PM
Arman4461
NRA Member - Click Here To Join!

Join Date: 
Jan 2020
Location: 
Asheboro, NC
Posts: 
12
TPC Rating: 
0% (0)
SA-22 Misfires



Log in to see fewer ads
Hello folks,
Wondering if someone can tell me which spring I need to get to improve the firing pin’s force, in order to eliminate my new rifle’s failure to ignite primers. NUMRICH has springs, but evidently this rifle has no hammer spring, if I can believe their schematic.
It does have a firing pin spring, and a Sear spring, as well as a Trigger spring. I typically purchase a complete set of springs for a new-to-me firearm, but I would like to know which spring actually gives the firing pin it’s force. I assume that the firing pin spring is the item, but that is just a guess.
Thanks for your knowledge!
Reply With Quote
  #2  
Old 07-22-2021, 02:25 AM
Toomany22s's Avatar
Toomany22s
NRA Member - Click Here To Join!

Join Date: 
Sep 2017
Location: 
Hoosierville
Posts: 
8,029
TPC Rating: 
100% (2)
Striker fired. By the FP spring. If you are having light strikes , prolly not the spring, probably the FP, or most likely you just donít have the the barrel in tight enough. That could be you,but most likely the little detents arnt holding. Either worn , or bad springs there, or worst of all the ridges they grip are worn.
Reply With Quote
  #3  
Old 07-22-2021, 05:53 AM
Arman4461
NRA Member - Click Here To Join!

Join Date: 
Jan 2020
Location: 
Asheboro, NC
Posts: 
12
TPC Rating: 
0% (0)
FTF

Toomany22s-
Thanks for the ideas. The gun is NOS from 1985. I have now pulled the trigger group and cleaned & oiled it. The barrel is in as tight as can be. I had to pull the trigger group to see why the schematic didnít show a hammer. Quite surprised at the design. Just another example of a genius at work. Imagine what he could have done with a computer and CNC.
Iíll pull the firing pin and verify it is not being slowed by flashing or burrs. The gun shot RWS sporadically, but set off GECO semi-auto better. When it worked, it was quite accurate, so it made me decide to leave it as an Iron sight gun. A fiber optic front would improve target contrast. I see that Midwest Guns has the sights and quite a selection of parts, so Iíll hit them up.
Reply With Quote
Sponsored Links
Advertisement
 
  #4  
Old 07-22-2021, 05:56 AM
HIghstandardguy
NRA Member - Click Here To Join!

Join Date: 
Dec 2009
Location: 
NC
Posts: 
1,895
TPC Rating: 
100% (4)
Also make sure the striker's passage in the bolt is clean and the striker moves freely.
Reply With Quote
  #5  
Old 07-22-2021, 07:59 AM
GladesGuy's Avatar
GladesGuy
NRA Member - Click Here To Join!

Join Date: 
Mar 2013
Location: 
So. Fla.
Posts: 
3,967
TPC Rating: 
0% (0)
Because of the design, a lot of burnt powder accumulates on the front of the bolt and may get into the firing pin cut out. I usually soak the entire bolt assembly in mineral spirits to clean it and scrub the front of the bolt with an old toothbrush.
Reply With Quote
  #6  
Old 07-22-2021, 08:41 AM
Camster

Join Date: 
Sep 2003
Posts: 
14,823
TPC Rating: 
99% (56)
A NOS 36 y.o. gun is most likely gummed up. I assume that you've q-tipped the firing pin hole.
Reply With Quote
  #7  
Old 07-22-2021, 02:44 PM
trapper bill
US Army Veteran

Join Date: 
Jun 2003
Location: 
Kansas
Posts: 
485
TPC Rating: 
0% (0)
These fellas on here really know these guns and the advice they gave hopefully fixes it. I will just add if your gonna buy parts I would buy another firing pin as well.
Reply With Quote
  #8  
Old 07-22-2021, 02:53 PM
trapper bill
US Army Veteran

Join Date: 
Jun 2003
Location: 
Kansas
Posts: 
485
TPC Rating: 
0% (0)
Oh I just read toomany22 already suggested the firing pin.
Reply With Quote
  #9  
Old 07-22-2021, 04:35 PM
Traptinkansas is online now
US Air Force Veteran

Join Date: 
Nov 2019
Location: 
Central Kansas
Posts: 
104
TPC Rating: 
0% (0)
Quote:
Originally Posted by Arman4461 View Post
Toomany22s-
Thanks for the ideas. The gun is NOS from 1985. I have now pulled the trigger group and cleaned & oiled it. The barrel is in as tight as can be. I had to pull the trigger group to see why the schematic didnít show a hammer. Quite surprised at the design. Just another example of a genius at work. Imagine what he could have done with a computer and CNC.
Iíll pull the firing pin and verify it is not being slowed by flashing or burrs. The gun shot RWS sporadically, but set off GECO semi-auto better. When it worked, it was quite accurate, so it made me decide to leave it as an Iron sight gun. A fiber optic front would improve target contrast. I see that Midwest Guns has the sights and quite a selection of parts, so Iíll hit them up.
The barrel can be tight, but still be out of adjustment. It can have too much of a gap between the end of the barrel and the end of the cartridge guide in the receiver. That can cause you problems, like the one you described. See the discussion around 4:55 into the video:
Art's Gun Shop SA-22 Disassembly/Assembly Video
Reply With Quote
Reply

Thread Tools
Display Modes

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




All times are GMT -5. The time now is 04:50 PM.

Privacy Policy

DMCA Notice

Powered by vBulletin
Copyright ©2000 - 2021, Jelsoft Enterprises Ltd.
Search Engine Optimisation provided by DragonByte SEO (Lite) - vBulletin Mods & Addons Copyright © 2021 DragonByte Technologies Ltd.
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2021 DragonByte Technologies Ltd.
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2021 DragonByte Technologies Ltd.
Copyright ©2000-2018 RimfireCentral.com
x