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Ruger SR1911 9mm not locking back

This is a discussion on Ruger SR1911 9mm not locking back within the Gunsmithing forums, part of the Firearm Forum category; I have a Ruger1911 in 9mm that I only shoot at the range as a target pistol. I am shooting light target loads out of ...


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Unread February 13th, 2020, 01:23 PM   #1
 
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Question Ruger SR1911 9mm not locking back

I have a Ruger1911 in 9mm that I only shoot at the range as a target pistol. I am shooting light target loads out of it and about 50% of the time the slide will not stay locked back on the last shot. I called Ruger and they told me that the stock recoil spring in my gun was 12 lb. I ordered some Wolf springs in 10 & 8 lb. I am hoping that this will cure the problem. Any thoughts on the subject?



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Unread February 13th, 2020, 01:28 PM   #2
 
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Use the heaviest spring that provides proper function. If you decide to shoot standard fmj or defensive loads put the stock spring back in.
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Unread February 13th, 2020, 02:04 PM   #3
 
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It sounds like to much spring and not enough umph, a lighter spring should solve the problem. A limp wrist will do it too..........not that I’m accusing you of having a limp wrist.........
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Unread February 13th, 2020, 02:27 PM   #4
 
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If the new springs don't help. And even for now. If you have other 1911's try swapping slide stops. That will eliminate if it's the slide stop going bad.
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Unread February 13th, 2020, 05:49 PM   #5
 
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Try the 10# spring first. As stated above, heaviest spring that will give you reliable functioning. How many rounds do you have through it? You might just need to run a couple boxes of standard velocity through it to break it in a bit more. I shoot standard velocity in 9mm, 10mm, and of course .45 acp 1911ís and they all have at least one step up in recoil spring.


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Unread February 13th, 2020, 05:58 PM   #6
 
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The spring is definitely a good place to start. I have had issues with magazine followers not pushing up the slide stop to hold it back.
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Unread February 13th, 2020, 06:29 PM   #7
 
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Quote:
Originally Posted by brnwlms View Post
Try the 10# spring first. As stated above, heaviest spring that will give you reliable functioning. How many rounds do you have through it? You might just need to run a couple boxes of standard velocity through it to break it in a bit more. I shoot standard velocity in 9mm, 10mm, and of course .45 acp 1911ís and they all have at least one step up in recoil spring.


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Must be at least 1000 threw it by now. I just started using it for a range gun and firing the low power target loads.
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Unread February 13th, 2020, 07:15 PM   #8
 
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Based on your last post it’s the spring, the lighter spring is the fix. I’m not a 9mm guy but I do shoot two Gold Cups. A thousand rounds is plenty to loosen the spring up.
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Unread Today, 10:38 AM   #9
 
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For those of you that are following this thread, I put the 10 lb. spring in the gun and took it to the range with my light target loads. I put 20 magazines worth threw the gun and all worked fine. The Wolf recoil spring came with a firing pin spring but I did not know how to take the firing pin out to change it. I searched the net and found a couple of videos about how to remove and replace the firing pin and will be changing it out later today. Thanks for all the comments. I am now a happy camper with my Ruger SR1911 in 9mm.
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