winchester ammo and the sig 1911... issues

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mymazda

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Has anyone experienced any issues with failure to feed Winchester ammo in there sig 1911? This is only the second 1911 I own so am still new to the 1911 world but I had 2 to 3 failure to feeds in the 100 rounds out of my new sig. One was caused by the round itself I think as I retested it and got the same result after putting the round back in the magazine. The second round is what worried me. Could it be the factory mags are just bad? I didnt have my rra with me so I couldent switch out mags to test buit the rra never jamed in any way with standard winchester fmj (wally world ammo). The second failure to feed happened with 4 rounds still in the magazine, the first would reoccurs be it the first or the middle round whenever I reloaded the mag, so im pretty certain it was the round. Anyway any ideas appreciated. I have two "power mags" coming in the mail so maybe that will help.
 
How new/old is your Sig 1911?

I recently bought a Sig 1911 TacPac and when Sig Sauer says "Match Grade" they meant it. The chamber is very tight and with very short leade (almost none) to the point I have decreased the OAL of my 200 gr SWC typically loaded to 1.250"-1.265" down to 1.245" OAL. Any longer and the shoulder of the SWC will hit the start of rifling.

When I initially bought the Sig TacPac, I burnished the barrel with (I know, the barrel rifling came very smooth so probably didn't need the break-in) several hundred rounds of Winchester White Box 230 gr FMJ. Even with the tight chamber and almost no leade, no failure to feed/chamber or extract.

Although I prefer Chip McCormick Power Mags, so far, factory magazines have worked without any issues.

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Brand new gun, bought it last week, serial starts GS37XXX so its not an early production.

EDIT: am going back to range tomorrow and will try 2 things, alternative mag from my other 1911 and alternative ammo. Will bring camera to snap picks if it happens again, also plan to run through more ammo this time.
 
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Some new guns just need to be shot ... 200-300 rounds before they get into the "trustworthy" area. Some guns just never do well with some ammunition and you just have to avoid that which causes problems.

You need to try several brands of ammo with various bullet weights and profiles.

If you're not a hand loader, that can be a wee bit expensive. But sometimes you just gotta "bite the bullet" and get it done.
 
I just got my sig 1911 rtss in earlier this week. It's a VERY tightly conctructed pistol. I haven't shot it a whole lot yet, but it has cycled 230 grain SWC and RN with no problems. One method I use is hand cycling, to check my handloads. I find that most of the time (not always, but 99%) if a round will hand cycle through the weapon it also will while firing. This also slows things down so that if there is a cycling problem, you can see what's causing it. With my other 1911's I have found that tweaking the bullet seating depth almost always fixes cycling problems, however if you don't handload that isn't really an option. My guess however, is that after a good break in period of a few hundred rounds your new sig will digest most any factory ammuniton.
 
The chamber is very tight and with very short leade (almost none) to the point I have decreased the OAL of my 200 gr SWC typically loaded to 1.250"-1.265" down to 1.245" OAL. Any longer and the shoulder of the SWC will hit the start of rifling.

When I initially bought the Sig TacPac, I burnished the barrel with (I know, the barrel rifling came very smooth so probably didn't need the break-in) several hundred rounds of Winchester White Box 230 gr FMJ. Even with the tight chamber and almost no leade, no failure to feed/chamber or extract.

This has been the same for me as well.

For factory ammo the Winchester 100 packs are my go to ammo for my Sig1911 as they have proved to be VERY accurate for me. (Plus, I want the brass )

The only failures that I've had have been and occasional SWC hand load or if I accidentally applied upward pressure to the side release and it caught on the take down notch. This only happened when the gun was new with less than 200 rounds.

Ah, one other thing ... it doesn't like to feed rounds with a XTP type bullet. The nose will get hung.
 
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well I had 3 failures in the first 78 rounds of this range session, the first was with the very first 8 rounds, the second was in the first 30ish and the last was at round 78. I was shooting UMC ammo this time. The remaining 272 rounds had no issues at all. This brings the total number of issues to 5 in the first 178 rounds. It appears that the gun failed to return in the first and third failure and the round never made it out of the magazine. The second failure you can see close ups (sorry about quality) of the gun itself. After I pulled the magazine and pulled and released the slide no issue but the slide was neither fully locked back or closed during that second failure.
 

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the pisce 1-3 first failure, 4-6 second, 7-8 third note it was the same magazine in issues 1 and 3 but not issue 2.
 

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Also the last 100 rounds were Remington green box, the first 250 this session were UMC (yellow). The gun is very accurate, no doubt more so then I am, but Im unsure if this could be a real issue or just was an issue with the first 178 of 450 rounds.

EDIT: also the prior jam during my session with the winchester ammo looked a lot like jam #2 of this series but the round was advanced out of the magazine and partially into the bore.
EDIT2: I will be going back to the range with more Winchester ammo with more umc as back up likely tuesday so will see if this continues or is just some form of growing pains with new gun.
 
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ran 100 rounds wwb thru my brand pplied new rcs without any issues using suppled mags friday, can't wait to do it again.
 
mags are my first guess. FTF issues in 1911 are usually mag problems. Now, it might be the mag catch not holding the mag high enough or to high, but i bet it is the mags. If you have new mags on the way I would try putting 200 rds through them only next time. You could try getting new Wolff springs for the factory mags as well and test that out.
Good luck to you... watching this closely as i have a SIG TACOPS sitting and waiting on my 30day OGAM time here in NJ.
 
Fortunately these came in the mail today (see attached). I have another 250 rounds of UMC + 100 of Winchester to try at the range tomorrow if weather is permitting. Hope these power mags help. The wait must be killing you (30 days), I lived in cherry hill for a while and NJ makes it inconvenient to be a gun owner. Am in Alabama now and its much easier (essentially no wait) and people seem more receptive to firearm based hobbies. If the gun keeps feeding bad with the power mags, I am going to RMA it for repairs to sig. If they cant fix it I may have to find another 1911. I do like everything else about it but any gun I own must be both reliable and accurate, not just one of two. I guess Im one of the few people who wish that major manufacturers would run 200 rounds through a new gun from the factory to work out any issues... Maybe all will go well with the 350 rounds tomorrow as I really like the way it shoots when it does chamber right.
 

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You can manually do a function check test by loading up the magazine and cycle the slide by hand (be sure to pull the slide all the way back or lock the slide and release without riding the slide forward with your hand).

If you can reliably cycle the rounds from the magazine, you should be good to go! :D
 
I dont touch the slide unless its the first round at the range or there is an error in feeding, jam or the like. I Just change mags and flick down the slide stop with my right thumb and let the recoil spring do its job.
 
Well the gun is now sold, total of 700 rounds through it with failure to chamber even in the last 100. I ended up sending to sig, they couldn't reproduce the problem, although I think they used speer ammo rather then the Winchester ammo I told them I was having the issue with. (there was a empty speer label from a speer 50 pack in the case when they sent it back). Plan to try getting a ruger off gunbroker next...
 
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