Failure to feed last round

[Arondos]

Ran a 50 round box through my last two trips to the range. Pretty consistently having problems with the last round not feeding especially with the factory magazine.

Today out of six fully loaded 8 rounds magazines the factory mag failed to feed the 8th round twice and the power mag failed once.

Other than that no more FTRB or feed problems and it only seems to happen on the last round of a fully loaded magazine.

Any ideas?

[doubs43]

Ran a 50 round box through my last two trips to the range. Pretty consistently having problems with the last round not feeding especially with the factory magazine.

Today out of six fully loaded 8 rounds magazines the factory mag failed to feed the 8th round twice and the power mag failed once.

Other than that no more FTRB or feed problems and it only seems to happen on the last round of a fully loaded magazine.

Any ideas?

What model RIA do you have? Is the feed ramp polished and is the chamber throated and polished?

Are your cartridges loaded with round nose bullets? If they are, they should feed reliably.

There are any number of things that it could be, including the magazines, the extractor or just that the pistol hasn't been broken in yet.

Others here are likely to have more ideas to offer than I do but what I mention are very common ailments, especially with a new pistol.

[rdhood]

Ditto, here, Arondos. I have put 160 rounds through my Tactical.... plated 200gr Berry's SWC, and I keep getting a failure to feed the last round. Not every magazine, but often enough and it occurs both on the factory ACT magazine as well as a CMC power mag. I put two magazines worth of the same bullets through a friend's Springfield 1911, and they ran perfectly. So now I have mixed up a batch of 230gr RN and am going to try these for a couple hundred rounds.

[niemi24s]

. . . having problems with the last round not feeding What do you mean by "not feeding"? We need more info.

• What kind of gun is this?
• Are both magazines 8 rounders?
• Have you tried a 7 round magazine?
• Where is the bullet of that last jammed round?
• Where is the case rim of that round located on the breechface in relation to the firing pin hole/extractor?
• What kind of ammunition are you using?
• Is the bullet of the jammed last round set back into the case?

[Hersh]

What do you mean by "not feeding"? We need more info.



Agreed. If this is a Commander-sized gun, I smell a bolt over base FTF.

[Arondos]

It is an RIA tactical. both magazines are 8 rounders. All the ammo has been 230 FMJ. Three different brands (Fiocchi, Meg tech, and Federal) Up to 400 or 450 rounds through the weapon now.

No nothing has been polished beyond how it came from the factory.

On the last round the slide cycles back and comes forward. Looking down from the top I can see brass. looks like the round is nose up, primer down. bumping the slide will not chamber it. I have to manually pull the slide back and eject the round.

Without fail if I then eject the magazine and put the one round that jammed in the mag. I can reinsert the mag, release the slide and it will chamber and fire the same exact round just fine.

Have not tried 7 rounders. Next trip I will try to pay more attention to where the round is when it occurs.

[wichaka]

When the gun comes to the FTF, is the slide slightly over top of the case?

[CDogg]

i wonder if the extractor isnt extracting the shell quick enough for the last round. mine was doing this before but on the 2nd to the last round. I fixed the problem now. I just tweaked on the mag lip abit. I dont exactly know how I did it but it worked lol :)

[John]

The extractor has nothing to do with the speed with which the case is extracted. The speed is the speed of the slide. The extractor is just holding the case on the breech face.

To the original poster, when the jam occurs, where is the nose and the rim of the jammed round. Is the rim of the round under the extractor claw on the breech face or below it (it hasn't slipped under the claw yet)?

[niemi24s]

both magazines are 8 rounders.What kind (make, model) are they?I have to manually pull the slide back and eject the round.This tells me that if pulling the slide back ejects the round, the case rim was behind the extractor - at least a little bit. Assuming the case rim didn't get behind the extractor because the slide was bumped in an attempt to chamber the round, it could mean either the extractor tension is too high or the breechface is rough (or has a bur on it).

• Have you checked the extractor's tension?
• Is the breechface smooth and without burs?Without fail if I then eject the magazine and put the one round that jammed in the mag. I can reinsert the mag, release the slide and it will chamber and fire the same exact round just fine.Not sure, myself, what this might mean except maybe the slide's not coming back as far when shot as when in slide lock.

• What weight recoil spring is in the gun?
• Is there a Shock-Buff installed?
• Does the gun (particularly the slide/frame interface) have plenty of oil?

[Hawkmoon]

1911Tuner has stated that a failure to feed the last round is virtually always a magazine problem.

What make and type of magazines are you using? Do they have dimples on the follower? Have you tried the gun with a new (or recently resprung) 7-round GI or hybrid magazine with a steel follower that has the dimple? If so, what was the result?

[log man]

Last round problems are a mag issue unless it's a last round ejection problem. Again the mag is failing to hold onto the cartridge and allowing the slide to escort it to the chamber. It's coming out of the mag by inertia and due to the spring not being able to exert as much pressure out it comes. Oil or any lubricating material will exacerbate this condition, make sure your mags are clean and dry. They get oil on them by the gun itself when it's fired and excessive oil blows. CDogg messed with the feed lips and isn't sure how that fixed it, well it fixed it by making the rounds just a little harder to come out.

LOG

[Ron22]

Same gun same problem and most likly same magazines. If the magazines are 8 round Novak.
Try reading this thread http://forum.m1911.org/showthread.php?t=1959
I bought two 7 round mags from Metalform with dimples and had no problems so far.

[Slopoke]

I had the exact same problem with my RIA (last round failure to feed w/ 8 round mags).

Wilson 7 and 10 rd mags worked fine, they have a follower design however that elevates the last round just like if an additional round was underneath.

What fixed the problem (not just masked it) was to install a Wilson bullet proof extractor. The old extractor tension was just too tight to allow feeding without an extra assist from below. Of course it could have been fixed just by reducing the tension on the original extractor, but given a chance to upgrade a part I will support my local gun shop :appld:

Now she feeds 8 round mags just fine with no failures at all.

Take off your slide and insert a cartridge in the extractor and try to shake it out. If it will not release then your extractor is too tight.