Beretta 948 "Slam fire" - Page 2 - Pistolsmith
Pistolsmith

Go Back   Pistolsmith > Pistolsmith Forum > Gun Talk

Reply
 
LinkBack Thread Tools Display Modes
Old 01-22-2013, 03:41 PM   #11
Senior Member
 
Join Date: Jun 2001
Posts: 1,800
Just buy a new spring from Gun Parts Corp:

948. Accessories | Numrich Gun Parts

Personally, if the firing pin looked even slightly worn I'd buy that too.
 
Remove Ads
Old 01-22-2013, 08:19 PM   #12
Senior Member
 
Join Date: May 2006
Location: near Huntsville, Ala.
Posts: 707
Quote:
Originally Posted by Badley View Post
Do you think Beretta used similar firing pin springs in there other models of small pistols? Looking at pictures it appears the may be longer, hard to tell. But thought I could cut to fit, if the were of the same strength.
Get a new spring like DFW said. We can't examine your gun; we're betting it's the old spring especially with long reach firing pin. You probably also could carefully remove a bit of steel from the rear of the FP to make it inertial like for example, a 1911. Or get a 'smith to do it for you.

In any case, change the spring.

And please let us know what happens.
 
Old 02-02-2013, 06:50 PM   #13
Junior Member
 
Join Date: Jan 2013
Location: Waynoka, OK
Posts: 8
Ok, recieved my new spring and firing pin today. Replacement was fairly simple.

But, on third release of slide it fired. Just like before. I can release the mag on a empty chamber and it the hammer never falls.
 
 
Old 02-03-2013, 02:42 AM   #14
Senior Member
 
Join Date: May 2006
Location: near Huntsville, Ala.
Posts: 707
Now that's odd. The third try? If the hammer isn't following/falling, then somehow the FP is sticking forward. You have thoroughly cleaned and smoothed the FP channel and breechface hole so the FP can't stick, right? No burrs, dirt, or anything else?

Or is the hammer sometimes coming forward due to improper sear engagement? Like DFW said, that's usually the case, even if erratic. How light is your trigger pull?

Try taking a fired case that fits the chamber and file off the part of the rim that's indented so that you chamber it such the extractor can't catch it. Then rack the slide. Check the rim where the FP would dent it. Any mark at all?

If none do it over, carefully checking each time.

If this fails to show what's happening, at the range chamber a live round and before you drop the slide, use a magic marker or similar to mark the case head where the FP would hit, then try dropping the slide. Retrieve the case/round and check for any marks from the FP or the ectractor which would/might fire the round.
 
Old 07-01-2013, 08:38 AM   #15
Junior Member
 
Join Date: Jan 2013
Location: Waynoka, OK
Posts: 8
Sorry for the delay. Took a piece of tap and placed it over hammer. I was able to recreate the malfunction. The hammer never fell, but the gun fired.

I removed the firing pin again and the ejector. There seemed to be a bit of a bur on the curved part of the ejector that fits into the top of the slide and has the pin running through it allowing it to pivot and that holds the firing pin in place. I took a hand file and removed the bur and smoothed the whole arc.

I will attempt to do your magic marker test this evening if I can get enough free time.

Thanks for you help again. I know its been a while for a reply.

Last edited by Badley; 07-01-2013 at 08:44 AM.
 
Old 07-24-2013, 10:06 PM   #16
Senior Member
 
Join Date: May 2006
Location: near Huntsville, Ala.
Posts: 707
Was the bur the problem?
 
Old 07-25-2013, 04:21 AM   #17
Junior Member
 
Join Date: Jan 2013
Location: Waynoka, OK
Posts: 8
The burr was not the problem. It is on it way to a friend of a friend who is a retired gunsmith to be checked out.
 
Old 07-27-2013, 12:40 AM   #18
Senior Member
 
Join Date: May 2006
Location: near Huntsville, Ala.
Posts: 707
Please let us know what the problem is/was.
 
Old 09-20-2013, 04:47 PM   #19
Junior Member
 
brentb636's Avatar
 
Join Date: Aug 2013
Location: Holland, mi
Posts: 10
Me with a 948, I'm waiting for the verdict !
 
Reply

  Pistolsmith > Pistolsmith Forum > Gun Talk


Search tags for this page

beretta 948

,
beretta 948 firing pin removal
,
beretta 948 for sale
,
beretta 948 manual
,
beretta 948 parts
,
beretta 948 pistol
,
beretta 948 review
,
beretta mod 948
,
beretta model 948
Click on a term to search for related topics.

Thread Tools
Display Modes


Similar Threads
Thread Thread Starter Forum Replies Last Post
WTB.... 6" barrel for Beretta model 76 IPSC Classifieds 0 02-14-2012 08:33 AM
Jordan "thought" 2" .22 mag outperformed .38 speeddeumon Ammunition 0 06-06-2011 04:00 PM
Victory: "long" action vs. "short" action, etc. MuzzleBlast Smith & Wesson Revolvers 1 08-16-2009 05:24 PM
"A few of mine/ The NON "Safe Queen's..." erh Pictures 0 08-13-2006 02:59 PM
"Large Frame" carry for a "Small Frame" CAVEDWELLER Holsters and Belts 2 10-11-2002 02:45 PM

Top Gun Sites Top Sites List


Powered by vBulletin 3.8.8
Copyright ©2000 - 2020, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO 3.6.1
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2020 DragonByte Technologies Ltd.
Copyright © 1999-2012 Pistolsmith. All rights reserved.