Sarge Posted January 26, 2017 Share Posted January 26, 2017 (edited) I would really like to do this by PM. I have posted the problem before but didn't really get very far. im hoping a seasoned smith, tinkerer, shooter etc can shed some light on my issue which is: One gun runs perfect. Any length ammo. Every mag I own. No hiccups at all. Other gun seems to nosedive once or twice per mag. Any length ammo. Every mag I own. All mags are adjusted to present rounds perfectly. New springs. Polished tubes. Looking forward to hearing from you. Thanks! Edited January 26, 2017 by Sarge Link to comment Share on other sites More sharing options...
Hi-Power Jack Posted January 26, 2017 Share Posted January 26, 2017 Have you talked to the gunsmith who built the "other gun"? Link to comment Share on other sites More sharing options...
Sarge Posted January 26, 2017 Author Share Posted January 26, 2017 (edited) Yes. It's even been worked on by him and others. There just has to be something small I'm missing. Edited January 26, 2017 by Sarge Link to comment Share on other sites More sharing options...
hvsmith Posted January 26, 2017 Share Posted January 26, 2017 Two possible things may be to ream the barrel & to re-cut the angle of the feed ramp, this took care of one of my past Open guns. Link to comment Share on other sites More sharing options...
teros135 Posted January 26, 2017 Share Posted January 26, 2017 2 hours ago, Sarge said: Yes. It's even been worked on by him and others. There just has to be something small I'm missing. If the "other" gun is new and has been doing this all along, I'm curious why the builder isn't taking responsibility for it? Why should you have to be the one to figure out what "small" thing is going on? Link to comment Share on other sites More sharing options...
magpulled Posted January 26, 2017 Share Posted January 26, 2017 What caliber and how long you loading the ammo. Link to comment Share on other sites More sharing options...
Aircooled6racer Posted January 26, 2017 Share Posted January 26, 2017 Hello: Start with extractor tension. Thanks, Eric Link to comment Share on other sites More sharing options...
MikieM Posted January 26, 2017 Share Posted January 26, 2017 (edited) 16 minutes ago, Aircooled6racer said: Hello: Start with extractor tension. Thanks, Eric Yes. Good advice. I'm currently having this problem myself. My STI 140mm mags were a bit spotty, performance wise, so I fully loaded them and let them sit for a week in a dark closet. I don't know if it was the dark closet, or what, but they all ran great last weekend. Springs have memories. Edited January 26, 2017 by MikieM Link to comment Share on other sites More sharing options...
Sarge Posted January 26, 2017 Author Share Posted January 26, 2017 15 minutes ago, Aircooled6racer said: Hello: Start with extractor tension. Thanks, Eric Round never gets close to the breech face. Is just barely caught by the bottom edge of the slide. Link to comment Share on other sites More sharing options...
412 Posted January 26, 2017 Share Posted January 26, 2017 Is the nose of the bullet very low on the ramp? Link to comment Share on other sites More sharing options...
ChuckS Posted January 26, 2017 Share Posted January 26, 2017 (edited) 8 minutes ago, Sarge said: Round never gets close to the breech face. Is just barely caught by the bottom edge of the slide. Try the mag catch from the gun that works in the gun that don't... (and you may need a little tweak of feed ramp geometry) Edited January 26, 2017 by ChuckS Link to comment Share on other sites More sharing options...
teros135 Posted January 26, 2017 Share Posted January 26, 2017 8 minutes ago, 412 said: Is the nose of the bullet very low on the ramp? To add to this, my CK 9 major feeds the bullet nose about 70% of the way toward the top of the ramp and slightly left of center. Using both MBX mags and STI mags with spacers. Stock CK polymer grip and mag catch. Very reliable, so far, in 3000 rds of jacketed and BBI. I have a .40 Limited gun that had feed problems. Clark Custom adjusted the feed ramp, which helped (also breech face redone due to pitting from SPM primers, which was catching the case rim as it was coming up the breech face). Link to comment Share on other sites More sharing options...
HI5-O Posted January 26, 2017 Share Posted January 26, 2017 23 minutes ago, ChuckS said: Try the mag catch from the gun that works in the gun that don't... (and you may need a little tweak of feed ramp geometry) Or, change the grip in the gun that doesn't work. If you are willing, take the entire grip assembly from the working gun and put it on the non-working gun. This is assuming you have an S_I type gun. Link to comment Share on other sites More sharing options...
Sarge Posted January 26, 2017 Author Share Posted January 26, 2017 20 minutes ago, HI5-O said: Or, change the grip in the gun that doesn't work. If you are willing, take the entire grip assembly from the working gun and put it on the non-working gun. This is assuming you have an S_I type gun. Already has a new grip on it and still no change. Originally had a steel grip on it and I thought it was too heavy. Put a new STI on it and it didn't change at all. I appreciate all the ideas. At some point maybe we'll get a hit. Link to comment Share on other sites More sharing options...
Sarge Posted January 26, 2017 Author Share Posted January 26, 2017 53 minutes ago, 412 said: Is the nose of the bullet very low on the ramp? When ramp gets dirty I can see rounds are hitting ramp just below the chamber. Just one or two per mag will nose directly into the bottom edge of the ramp and be wedged hard in the mag. I can pull mag out and round stays stuck until I pop it out Link to comment Share on other sites More sharing options...
jcc7x7 Posted January 26, 2017 Share Posted January 26, 2017 Sent you a PM 56 minutes ago, Sarge said: When ramp gets dirty I can see rounds are hitting ramp just below the chamber. Just one or two per mag will nose directly into the bottom edge of the ramp and be wedged hard in the mag. I can pull mag out and round stays stuck until I pop it out Is your ammo to long and dragging in the mag. This may have already been addressed. i.e. using same mags in both guns Link to comment Share on other sites More sharing options...
412 Posted January 26, 2017 Share Posted January 26, 2017 I think redoing the ramp will solve the problem. If you can look at the schuemann aet ramp and try to reshape the ramp. I did this to a different barrel years ago and it made the gun run all the time. The one thing the aet barrel ramp does is changes the ramp angle and support of the case but after 30,000 rounds it has not hurt anything. Link to comment Share on other sites More sharing options...
abb1 Posted January 26, 2017 Share Posted January 26, 2017 This is probably not the case with your issues, but thought I would throw it out there as it is very common. A lot of jams with a 1911/2011 happen when there is contact with the slide. This happens riding the thumb on the safety, or having the non-dominant hand sitting high and making contact with the slide. As guns are made differently with different safeties and scope mounts, this may not have been an issue with a previous gun, but may be for your new one as we tend to shoot all guns the same. Link to comment Share on other sites More sharing options...
RonPogi Posted January 26, 2017 Share Posted January 26, 2017 Try racking the gun without the installed extractor. Thanks:Ron Link to comment Share on other sites More sharing options...
MrPostman Posted January 26, 2017 Share Posted January 26, 2017 (edited) Ramp may be longer at the bottom and protrude into the magazine well more than the barrel ramp in the other gun that works. Take both barrels out and compare. Barrel comes backward when the gun is fired and this would put the longer ramp into the rounds of the loaded magazine pushing them down at the nose causing the nosedives. May only need about .010" to .015" off of it to correct if this is indeed the problem. Edited January 26, 2017 by MrPostman Added content Link to comment Share on other sites More sharing options...
mro111lland Posted January 26, 2017 Share Posted January 26, 2017 Is the mag sitting hi enough in the gun Link to comment Share on other sites More sharing options...
BallisticianX Posted January 26, 2017 Share Posted January 26, 2017 Sent you a PM Is your ammo to long and dragging in the mag. This may have already been addressed. i.e. using same mags in both gunsThis would also be my first question. Now you can isolate if it's a mag or gun issue. If the mag feed lips are not tuned or have burs it can cause a nose dive. To light/worn out of a mag spring can hang up a follower and cause this problem as well. Sent from my iPhone using Tapatalk Link to comment Share on other sites More sharing options...
Sarge Posted January 26, 2017 Author Share Posted January 26, 2017 9 minutes ago, BallisticianX said: This would also be my first question. Now you can isolate if it's a mag or gun issue. If the mag feed lips are not tuned or have burs it can cause a nose dive. To light/worn out of a mag spring can hang up a follower and cause this problem as well. Sent from my iPhone using Tapatalk See post #1. i have 10 mags tuned , adjusted, new springs, polished that work perfect with any length ammo in my other gun and other shooters guns. Link to comment Share on other sites More sharing options...
GrumpyOne Posted January 26, 2017 Share Posted January 26, 2017 Sarge, do you by chance have a picture of the nose dive? It is either a feed ramp issue or a breech face issue. Could the underside of the slide be dragging the round forward some upon chambering the round above, and the round that nose dives is sitting up against the feed ramp when the slide tries to strip it? Also, can you take a pic or two of the underside of your slide and the breech face? Link to comment Share on other sites More sharing options...
ScottieShootz Posted January 27, 2017 Share Posted January 27, 2017 I'd take both top ends off, insert loaded mags and look at how the malfunctioning gun lines up with the top rounds. Then I'd check with the barrels installed to see where they both are lined up to. Id also check how the barrel unlocks on the frames and compare them. Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now