1911 jaming

bjl95mustang

Member
Jan 8, 2009
123
16
Austin, Texas
I took my springfield 1911 custom shooting today.

With the slide locked back I insert the clip, hit the slip lock and when the slide slides forward the ammo jams. Some times I can push the slide forward and it loads all the way other times i have to pull the slide and load another. It did this a few times.

It also some times would jam while firing. I could push on the slide and it would fully load.

I was using blazer brass ammo and a brand new looking wilson clip.

And on some of the jams there was a dimple left on the bullut.from it jaming at the barrel.

I'm going to give it a good cleaning tomorrow and going over what else should i check.
 

txinvestigator

TGT Addict
May 28, 2008
14,119
113
Ft Worth, TX
That is a fail to feed. It can be caused by a buildup of shooting residue or lack of lubrication, or both.

Also caused by magazines (clips are what hold your hair back)

You don't now if the magazine was new?

Did you try different ammo?
 

JKTex

Well-Known
Mar 11, 2008
2,018
38
DFW, North Texas
Also, are you sling shotting (pulling the slide back and releasing so full forward motion is realized) it or just releasing the slide stop? Sometimes using the slide stop doesn't have enough power to go into battery and chamber a round. Try sling shotting it and see what it does.

Also, Wilson mags are sometimes known to have weak springs. Wilson will replace the spring though. If you have another mag or one you can borrow, try it.
 

robocop10mm

Active Member
Jan 9, 2009
997
36
Round Rock
A properly set up 1911 should not require sling shotting. The slide is held close enough to the "fully open' position that it should have plenty of energy to feed/chamber.

1st and always suspect the magazine. Try a different one.

Next is ammo. Was the Blazer Brass 230 FMJ? If so it was likely not the ammo.

Lastly look at the feed ramp. Just because the pistol says "Custom" does not mean it has a properly configured feed ramp. Does it have a "ramped" barrel, meaning is the feed ramp one piece and extends down into the frame or is it the traditional two piece with the frame being a part of the feed ramp? If it is ramped, that "should not" be the problem. If it is traditional, two part, field strip and put the barrel in the frame with the barrel ramp sitting on the frame ramp. There should be a very slight difference in the two and the barrel ramp should not over lap the frame ramp.

Find a good 1911 gunsmith or send it back to the factory.
 

bjl95mustang

Member
Jan 8, 2009
123
16
Austin, Texas
I'm going to get another clip this weekend at the saxet gun show. There is some gunk inside my current clip.

it's a 2 piece ramp. But I noticed alot of gunk on the frame ramp and I might have missed that when I did my last cleaning.

I have a short guide rod. it's only 1.5-2" long. Should I try upgrading to the long guide rod?

I'm going to give it a good lube job and see how she does.

Thanks for the help.
 

bjl95mustang

Member
Jan 8, 2009
123
16
Austin, Texas
And at the range yesterday they sell dummy ammo that you can feed through your gun to simulate having a round in the chamber. Do you think it's worth trying to see if I can duplicate the issue?
 

robocop10mm

Active Member
Jan 9, 2009
997
36
Round Rock
Do you know how to disassemble the mags with the fixed floor plate? Magazines should be clened with the same care and frequency as the gun.
 

brickboy240

Active Member
May 19, 2008
238
16
Houston, TX, USA
The guide rod length probably has nothing to do with it.

Probably the magazine or MAYBE a lazy recoil spring.

First, try another magazine and make sure the ones you have are totally clean and have no dings or bent feed lips. Wilson 47D mags are usually VERY good, but if you get them super dirty or bend a feed lip - they can misfeed.

If the mag swap/cleaning did not work...try lightly polishing the feed ramp with some very fine crokus cloth and some Break Free. Again...GO EASY and do NOT use anything under 800 grit. Get it glass smooth.

If this does not work, try replacing the recoil spring with one that has maybe 2 pounds more strength. Don't go to nuts with the "extra power" springs some makers offer...those create a totally different problem. Your pistol COULD have been shipped with a lazy or slightly weak recoil spring that is just lazy enough to not bring the 1911 into battery. It happens! Recoil springs can be had from Wolff and are not expensive.

Any one or all of these "fixes" ought to get you running 100%. I am betting the mag swap/cleaning alone will do it. I run Blazer Brass hardball through my Colt Commander and Kimber TLE all the time and it runs 100%, so I really doubt its the ammo. The Winchester White box stuff is loaded a tad light and inconsistent but I have never expereinced powder puff loads in Blazer Brass. Stay away from Blazer alloy cased ammo - the light cases mess with the timing on some 1911s and can cause ejection jams. I get 50/50 performance out of Blazer alloys in my 4 1911s and can only run that stuff in the P220 SIG.

Good luck...your problem is minor and probably very fixable.

- brickboy240
 

Texas1911

TGT Addict
May 29, 2017
10,623
38
Austin, TX
Are you shooting .45 ACP in a .45 Super modified 1911? Has the recoil spring been changed? If not, it is probably short stroking the slide. If it has been changed, then what pound rate spring did he put in it?

With a two-piece guide rod you probably want to run a 18.5# spring.

Clean and retest.
 
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