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Old April 15th, 2021, 05:29 PM #1
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My 1911 FTF issue

Kimber Target Stainless I purchased used
Came with an after market mag
I did bring a Kimber factory and a Wilson combat mag and they did this less but each did it at least once. Put 100 rounds today and 4 FTF total. When I got the gun it was flawless for first 200 rounds then did this almost every mag. Extractor had lots of crud when I pulled it. I just pulled and cleaned it last night. Once today the round instantly fed when I pulled the mag. It’s like the mag is holding onto it too long?

I shoot reloads with SWC. They all drop into a case gauge fine

Suggestions? Switching to all factory ammo is out of the question. I’m following a well documented target SWC formula.

I can however try a box of factory 45 but I was saving that for my GI 1911 and 45 is hard to replace right now. I have plenty of reloads to tinker with.

Photos are recreations with dummy rounds as the indoor range I was at today does not allow cell phone pics on the range




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Old April 15th, 2021, 05:42 PM #2
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This may help diagnose the problem.
https://americanhandgunner.com/gear/...e-1911-45-acp/
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Old April 15th, 2021, 05:44 PM #3
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Do the rounds drop into the chamber like they do into the case guage? Have you reloaded 45acp for other guns? Are you using 8rnd or 7rnd mags? I never had a perfect experience with the Kimber 8 rnd mags in mine.
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Old April 15th, 2021, 06:01 PM #4
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To quote JMB from his website, "I designed two types of 1911s. Those have had a failure to feed, fire or eject a round and those that will have a failure to feed, fire or eject a round. As JMB tweeted General Pershing, "Remember, SPORTS, Jack! Always be prepared for SPORTS!"

1911 Shooters forget that "Perfect is the Enemy of Good" especially when it comes to their pistol's specifications and tolerances.
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Old April 15th, 2021, 06:15 PM #5
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That was helpful...

OP, remove the slide assembly and look for barrel bump. Kimbers are notorious for that. It will stall the feeding round as you illustrated in the pic. Barrel bump occurs when the curved section of the lower lugs just in front of the flat bump the slide stop pin. These will show up a shiny polish marks to deep curved depressions. If barrel bump is evident reduce the radius on the front of the lugs until the edge of the link pin hole just misses the bump location(s).

If barrel bump is not the culprit try feeding a few dummy rounds with the extractor removed. If the feed event is greatly smoothed the extractor should be tuned and tension adjusted.
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Old April 15th, 2021, 06:27 PM #6
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4 FTF in the first 300 rounds of reloads is more than enough empirical data to jump though hoops instead of letting the gun breakin a little more with some cleaning, lube and different ammo.
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Old April 15th, 2021, 06:33 PM #7
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1. If you are shooting semi wadcutters, you should only have 1/16 of an inch of the should showing outside the case. 2 the bottom of the extractor should be radiused so that it allows the case to slide into position when the slide is worked slowly by hand. 3. Extractor tension should be set with a Weigand gauge. https://www.brownells.com/gunsmith-t...prod16125.aspx
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Old April 15th, 2021, 06:44 PM #8
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What lube did you use, and how did you clean, and lube your new pistol?
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Old April 15th, 2021, 07:14 PM #9
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My crappy advice that worked for me is to reduce extractor tension. I've also read to see if chambering the round from the mag while putting pressure on the mag from the bottom. If that fixes it, allegedly you need a new part that allows the magazine to sit higher for the round to feed better.
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Old April 15th, 2021, 10:20 PM #10
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Some reading ..
https://rangehot.com/1911-troublesho...feed-failures/
https://www.ssusa.org/articles/2017/...ed-semi-autos/
https://sightm1911.com/lib/tech/reliability_secrets.htm
https://sightm1911.com/lib/tech/FTF_FTE.htm
http://www.how-i-did-it.org/1911-pro...the_piece.html

https://castboolits.gunloads.com/sho...ure-to-battery

some of the URL's I have in a folder..

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