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Thread: The Art and Science of Keeping Your 1911 Running

  1. #2561
    Ran a Steel Challenge 5-stage match with the 9mm Colt today. Functioned perfectly with one specific ammunition.

    Yes, this is what it took to get the ejection to run properly. Winchester M1152. (These numbers were confirmed with a LabRadar unit running at the same time, so yes those are real- this is very nearly 9mm Major.)

    That tells me all I need to know about the spring rate in this thing.

    Obviously I'm installing a proper GI guide rod and a 10# IMSI spring tomorrow. That should make it a bit more tolerant of more normal 9mm ammo.
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  2. #2562
    Site Supporter HeavyDuty's Avatar
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    I’m realizing I much prefer the flat triggers in my DW ECPs and want to put them in my other 1911s. I haven’t fitted a 1911 trigger in 30 years, I want to say it was a Chip McCormick carbon fiber shoe one in my Enhanced Government. I’m sure I can figure it out.
    Ken

    BBI: ...”you better not forget the safe word because shit's about to get weird”...
    revchuck38: ...”mo' ammo is mo' betta' unless you're swimming or on fire.”

  3. #2563
    Does the 9mm mag recommendation vary, depending if the pistol has a ramped or standard barrel?

  4. #2564
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    Quote Originally Posted by theJanitor View Post
    Does the 9mm mag recommendation vary, depending if the pistol has a ramped or standard barrel?
    Some folks might have specific recommendations, but I've used Wilson Combat, Ed Brown, and Metalform 9mm magazines in guns with and without ramped barrels with good success.

    Of the above, the Metalform mags seem to work well but eventually they can start failing to lock the slide back on empty.

    I will say that I think a 9mm 1911 should have a ramped barrel, but there are some good guns that don't have one.

  5. #2565
    Site Supporter Elwin's Avatar
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    Quote Originally Posted by HeavyDuty View Post
    I’m realizing I much prefer the flat triggers in my DW ECPs and want to put them in my other 1911s. I haven’t fitted a 1911 trigger in 30 years, I want to say it was a Chip McCormick carbon fiber shoe one in my Enhanced Government. I’m sure I can figure it out.
    There are a lot of good options out there, but I'm a huge fan of the 10-8 flat trigger and have put it in every 1911 that I did any serious shooting with (three so far). It has a fixed overtravel screw, which has two benefits. One, once you adjust the overtravel by filing the screw down, it's done and you don't have to worry about thread locker or the screw backing out. Two, I hate having a hole in the front of my trigger as it causes a blister on my trigger finger. Apparently most people don't have that problem but for me a 10-8 trigger is a requirement for any 1911 I'm going to shoot more than just occasionally.

  6. #2566
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    I have read every page of this thread. Great information. Recently I dipped my big toe into the 2011 game with a Tisas Duty. Feeding with it has been nearly flawless, couple bobbles in the first few magazines but great after that.

    Ejection is what is giving me fits right now. It fails the 10-8 test even after replacing the extractor with a properly tensioned EGW. Once or twice with every magazine the spent case comes straight back to the face or the chest. A few times on the last round the case would not get out of the ejection port and would either be laying on the top of the mag or caught between the slide and the barrel. I have tried 3 different kinds of factory ammo, the factory recoil spring, a 9 pound and 10 pound Wolf.

    There is just a tiny bit of clocking with the factory FPS, with both extractors. The factory ejector is tight in the frame. Research says to modify the ejector nose, but I am debating putting the factory extractor back in and sending it back for evaluation. I am at or over 500 rounds and likely have 1500 or more hand cycles in dry fire.

    Thoughts?

  7. #2567
    Member
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    Jan 2016
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    The Hills of Tennessee
    Any contact with the extractor claw and the web of the case? Extractor nose contacting the case? Profile and polish are as important as tension. I'd change out the fsp to get rid of the clocking as well. Inconsistent angle and tension are the bane of good controlled feed.

    Have you checked the breach face? Bit of very smoothing it out can't hurt.

    Sent from my SM-A536U1 using Tapatalk

  8. #2568
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    Mar 2016
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    South Texas
    Quote Originally Posted by SW CQB 45 View Post
    Well Hell,

    the deeper I clean this SACS Nina, the more I find.

    I have not shot this piece in yearss, and when I dug it out it was dirty.

    I replaced the firing pin stop, the plunger tube detents and spring (spring felt soft).

    I have 24 mags for this gun (definitely overkill), and they are the Springer 9 rounders. I can't recall the manufacture.

    This gun was built in 2011 by SACS and I have over 10K of target style or 147 TMJ trouble free rounds through.

    What I have notice in inspecting and cleaning is the jagged or rough feeling of the engagement of the slide stop locking the slide to the rear.

    I tried several dry empty mag slide lock backs and the slide stop barely catches the slide. Well, there is a slight rolled over edge on the slide stop notch cut out.

    When I try to push the slide stop to full engagement with the slide, its rough but only the corner is missing Armory Kote (the finish). The rolled over edge is on the bottom of the slide not in the notch.

    12 of my mags were dirty, so I cleaned them all hoping to see an improvement of slide stop engagement with the slide. NOPE!

    My slide stop is factory MIM and I noticed several mold lines on the back face. Hey maybe those are adding to the rough engagement.

    I began stoning that area to flatten the lines, but it's a crater and did not want to waste my time. F it, I ordered a EGW 9mm slide stop.

    It appears this issue might have been slowly showing itself, but I never caught it till now.




    Follow up
    It appears SACS in 2011 did not fit my slide stop. This might have been an issue since day one and never noticed it till now.

    after examining it, it appears the inner lug of the slide stop has been riding up against the slide causing the slide stop to drag upward on an empty mag.

    the inner lug needed material removed from the inside. I carefully stoned it with a knife edge stone. And while I think the slide stop has improved.... there is still interference. Part of me wonders if the slide stop is out of spec (factory MIM).

    So I ordered a .200" pin EGW only to be disappointed that the SACS gun is a .196" pin and the .200" is a no go.

    I could not find a new quality heavy duty .196" pin slide stop (like EGW, WC, etc).

    I polished the back of the slide stop. I plan to use this piece is a accuracy match this weekend.





    I guess I need to hack off this piece on the new firing pin stop.







    If you're going to be a bear….be a GRIZZLY!

  9. #2569
    Member
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    May 2021
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    Quote Originally Posted by Shorikid View Post
    Any contact with the extractor claw and the web of the case? Extractor nose contacting the case? Profile and polish are as important as tension. I'd change out the fsp to get rid of the clocking as well. Inconsistent angle and tension are the bane of good controlled feed.

    Have you checked the breach face? Bit of very smoothing it out can't hurt.

    Sent from my SM-A536U1 using Tapatalk
    extractor nose, hook and lower grove was all profiled properly, no case contact with the hook. I have not done anything to the frame or slide in case I send it back, but the breech face looks good. I have not checked the actual dimensions yet.

  10. #2570
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    Jan 2016
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    The Hills of Tennessee
    Quote Originally Posted by Ethang View Post
    extractor nose, hook and lower grove was all profiled properly, no case contact with the hook. I have not done anything to the frame or slide in case I send it back, but the breech face looks good. I have not checked the actual dimensions yet.
    Sounds like you are all over the common stuff.

    Have you checked deflection on the gun? If it is dropping last round, the extractor is losing the round at some point after it leaves the chamber. How does the gun perform with no magazines in the gun?

    Sent from my SM-A536U1 using Tapatalk

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