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  #1  
Old 01-12-2013, 06:29 AM
wgg wgg is offline
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1911 357 Sig

I am considering building a 357 Sig on a 1911 frame. I have not seen any posts concerning this conversion. My question, is this a viable build. Thanks for your replies.
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  #2  
Old 01-12-2013, 07:04 AM
MGould MGould is offline
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Why? What does that caliber offer you that .38 Super doesn't?

Oh, and welcome to the forum.
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  #3  
Old 01-12-2013, 08:25 AM
juleslewis juleslewis is offline
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I did it just for the fun of it. I had a Kimber 5-inch in 40S&W and fit a Nowlin barrel. It worked fine, but 357SIG ammo is expensive. Then I fit a Nowlin 10mm barrel. That's fun to shoot, but the ammo is more expensive. So, the Kimber is back to 40S&W.
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  #4  
Old 01-12-2013, 08:30 AM
navman navman is offline
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Why ask why? The beauty of the 1911 platform is that you rally are only limited by your imagination and technical skill (within reason).

I personally have contemplated building a .357 Sig version...just 'cause.
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  #5  
Old 01-12-2013, 08:33 AM
Jerry944T Jerry944T is offline
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Sounds like a fun project.
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  #6  
Old 01-12-2013, 09:19 AM
MGould MGould is offline
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Originally Posted by navman View Post
Why ask why?
Just because I saw that wgg was new and perhaps wasn't aware of all varieties the 1911 comes in. I wanted to make sure he wasn't chasing ballistics already available.
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  #7  
Old 01-12-2013, 09:36 AM
ClarkEMyers ClarkEMyers is offline
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There are lots and lots of posts concerning this conversion over the years. It's not a popular conversion for many good and sufficient reasons.

Mostly the 1911 works more reliably with full length cartridges in the .900 nominal range. Therefore for serious use a .45 or .38 Auto +P tends to be more reliable. For high performance the 9X23 is easier to build and more reliable across many 1911 pistols than the stubby .357 Sig. In addition the .357 Sig can be used in smaller frames so why not use the smaller frame.

That said if a .357 Sig in a 1911 is what you want go for it.
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  #8  
Old 01-12-2013, 02:23 PM
grendelbane grendelbane is offline
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It can be done. I have done it. It took a lot of effort, though.

The 9x23mm Winchester is a better choice for a high velocity 9mm cartridge. The .38 Super is of course the classic 9mm cartridge for 1911 type pistols.

I re-barreled my Delta Elite, and left the 10mm ejector in place. This means that I can load 357 SIGs with conventional 9mm bullets that would be too long to fit into a 357 SIG magazine. Sort of a 9x25 Dillon Jr., if you will.

I don't believe the popular theory that bottle necked cartridges are more reliable than straight wall cartridges. This based on my experience with the 357 SIG in a Delta Elite. They can be made to work, but the above mentioned cartridges are easier to work with.
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  #9  
Old 01-12-2013, 03:27 PM
wgg wgg is offline
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1911 357 Sig

I have 1,000 are so rounds of the ammo. I have a Glock 22, would I be better off to get a 357 Sig barrel for the Glock? I like the way a 1911 handles and looks and feels over the Glock, I am trying to warm up to the Glock. I know the Glock is a fine weapon, this is my first Glock.
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  #10  
Old 01-12-2013, 03:30 PM
BlueBronco BlueBronco is offline
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Quote:
Originally Posted by MGould View Post
Why? What does that caliber offer you that .38 Super doesn't?

Oh, and welcome to the forum.
Better ballistics and power not to mention the feed reliability of a bottle neck cartridge. For me, the local availability of ammo on the shelf not to mention better ammo options are about 10x that of .38 Super. I have a Glock 20 and have contemplated a .357 Sig barrel but would prefer a 1911 for the .357 Sig. I think a .357 Sig barrel would be a good option in a Delta Elite or clones relative to the 10mm barrel and would reduce battering.

Last edited by BlueBronco; 01-12-2013 at 03:36 PM.
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  #11  
Old 01-12-2013, 04:06 PM
wgg wgg is offline
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1911 357 Sig

Would it be feasible to buy a 1911 40 S&W slide, 357 barrel and use it on a full size frame.
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  #12  
Old 01-12-2013, 04:32 PM
straid straid is offline
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Quote:
Originally Posted by wgg View Post
Would it be feasible to buy a 1911 40 S&W slide, 357 barrel and use it on a full size frame.
Or trade the ammo for something else you need (other caliber or some fancy doo-dad).
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  #13  
Old 01-12-2013, 04:53 PM
ClarkEMyers ClarkEMyers is offline
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it's a legitimate want but not a logical choice.

Quote:
Originally Posted by BlueBronco View Post
Better ballistics and power not to mention the feed reliability of a bottle neck cartridge. .......
The observed, not theoretical, feed reliability of a .357 Sig in a 1911 is inferior to the feed reliability of the full length cartridges. The ballistics are inferior too. Of course the .357 Sig might work just fine but it's not in any sense an improvement - in the 1911 pistol designed around a rather different cartridge.

The full length bottle necked cartridges such as the 9x25 or the once suggested for bullseye .45 necked to feed .38 wadcutters feed just fine but then again I'll match my own carry 9x23 against any other 1911 pistol for reliability and performance that is feeding and ballistic performance in a carry pistol.

Myself I shoot .357 Sig in a S&W M&P compact switch barrel with a .40 S&W barrel and 9x19 barrel for future shortages.
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  #14  
Old 01-12-2013, 05:41 PM
GT40DOC GT40DOC is offline
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I did it years ago, and it works 100%. I started with a Colt Defender in 40 S&W, and had BarSto build me a 357Sig barrel for it. I fitted the barrel, and use the same mags and recoil system, and have a GREAT CCW handgun. I have no reliability issues. I even shoot my reloads through it with zero problems.

If you are interested it trying it, I say go for it!!! You won't be disappointed.
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  #15  
Old 01-12-2013, 06:51 PM
wgg wgg is offline
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1911 357 Sig

Thanks for all the replies.
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  #16  
Old 01-12-2013, 10:13 PM
beretaus beretaus is offline
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I think the 1911 would be a good platform for the Sig round. I have a barrel for my XDm and it is kind of a sharp recoil ,the extra weight of the 1911 may make it better shooting. I like the round but can only shoot so many before I switch back to the .40 barrel.
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  #17  
Old 01-12-2013, 10:20 PM
Quack Quack is offline
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As SHOT 2012, Sig was hinting about having a 1911 in 357Sig coming out late in 2012 and it still hasn't happened just like Max's signature model which was also be released in 2012
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  #18  
Old 01-13-2013, 06:53 AM
richpetrone richpetrone is offline
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.357 Sig Conversion

Most .357 Sig barrels probably are .355" interior bore dimensions so any good 9mm bullet may be used.....ask the mfg. of the barrel for the interior barrel dimensions. Many aftermarket .38 super barrels also start with .355" barrel blanks.

There are quite a few negatives to building a .357 SIG, but if that is what you want, go for it.

.357 SIG brass is not cheap, and not always readily available. Factory .357 SIG ammo is certainly not cheap as well. When you make a firearm with a not too widely accepeted caliber, it may be harder to resell and get back the money you invested should you ever decide to sell it. For the most part, building your own gun and having it refinished is always more expensive than buying a new one, so it may be difficult to sell a gun with a not so common caliber choice.
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  #19  
Old 01-13-2013, 07:13 AM
wgg wgg is offline
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1911 357 Sig

Good points to consider, I am already set up to reload for the 357 Sig round. I have used it as a duty round since it first came out.
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  #20  
Old 01-13-2013, 07:16 AM
glider glider is offline
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Sig does catelog a 1911 chambered for 357 sig, the nightmare I think. I looked just a few days ago, I'm interested in that to.
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  #21  
Old 01-13-2013, 09:15 AM
Jerry Keefer Jerry Keefer is offline
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Quote:
Originally Posted by richpetrone View Post
Most .357 Sig barrels probably are .355" interior bore dimensions so any good 9mm bullet may be used.....ask the mfg. of the barrel for the interior barrel dimensions. Many aftermarket .38 super barrels also start with .355" barrel blanks.

There are quite a few negatives to building a .357 SIG, but if that is what you want, go for it.

.357 SIG brass is not cheap, and not always readily available. Factory .357 SIG ammo is certainly not cheap as well. When you make a firearm with a not too widely accepeted caliber, it may be harder to resell and get back the money you invested should you ever decide to sell it. For the most part, building your own gun and having it refinished is always more expensive than buying a new one, so it may be difficult to sell a gun with a not so common caliber choice.
Hello Rich...
I have been watching this thread... I have a looong and loving association with the 357 Sig. I worked feverishly to get rid of the 9mm when I first moved into the leading role as head firearms instructor for a major PD. ( early 90s) It's very hard to initiate change in L/E. Long story short, I finally overcame.. We were the second, as far as I know, major PD in the nation, to transition to this new, and controversial cartridge at that time. Texas Dept. of Public Safety, was the first, with approx. 3000 officers and I used much of the research data to support my efforts. In the early days of our transition, we experienced a fair number of officer involved shootings. The results from these shootings, mirrored the reports from TDPS. All center mass hits resulted in complete incapacitation. Even extremity hits ended the fight in most every case. I was much impressed with the results and reviewing of autopsy reports/photos proved we had made the right selection with the 357 Sig. Soon after that the SS, and Air Marshals moved to the 357. Initially, the ammo was an issue. Availability, and price was not good. Within a year or two, Speer had their manufacturing process bugs worked out, and availability issues vanished, and I was purchasing .357 for the same price as 9mm. That's off State ammo contracts. In the old days, before this eco ($) crunch, we were consuming 1/4 + million rounds a year. Feeding, and malfunctions, all but vanished. Weak shooters had to work harder, as the recoil is a bit sharper than the 9mm, and the decibel level is quite a bit higher.. We added extra training opportunities, and classes for the troubled shooters. All were able to meet or exceed the required standards. I do feel, that the .357 is about the limit for the large PD's to meet the Fed. and State qualification standards.
Just slugged my personal 357 Sig. and it is .3558
I sold the agency brass to Southern Belle Brass. This lady is a wonderful person to deal with. So, if you ever need .357 Sig brass, she can probably help out. We sold it by the ton(s)...so it's readily available. A google search will get her contact info.. I've been retired for 4 years, and completely out of the loop, so some changes may have occurred..
I have said this before, and it always raises ire on 1911 forums, but if I am knowingly going into harms way, I am taking my 357 SIG..
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  #22  
Old 01-13-2013, 09:48 AM
beretaus beretaus is offline
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I got 1000 once fired Speer brass from Brassmanbrass out of Las Vegas. It was all excellent. When you reload the caliber it costs no more to shoot than most others so to me ammo costs is a non issue. This thread has me thinking, maybe a second barrel setup for my next 38Super 1911. Hmmmm.
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  #23  
Old 01-13-2013, 10:35 AM
BlueBronco BlueBronco is offline
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Quote:
Originally Posted by ClarkEMyers View Post
The observed, not theoretical, feed reliability of a .357 Sig in a 1911 is inferior to the feed reliability of the full length cartridges. The ballistics are inferior too. Of course the .357 Sig might work just fine but it's not in any sense an improvement - in the 1911 pistol designed around a rather different cartridge.

The full length bottle necked cartridges such as the 9x25 or the once suggested for bullseye .45 necked to feed .38 wadcutters feed just fine but then again I'll match my own carry 9x23 against any other 1911 pistol for reliability and performance that is feeding and ballistic performance in a carry pistol.

Myself I shoot .357 Sig in a S&W M&P compact switch barrel with a .40 S&W barrel and 9x19 barrel for future shortages.
.357 Sig rounds are designed a lot different than 38 Special wadcutters. I looked at a 60s vintage Colt set up to run the 38 Sp Friday. Interestingly, I also see more .357 Sig on the shelf lately than I do 9mm and .40 S&W due to panic buying. I don't have any problem with the 9x23 or 9x25, but again, the .357 sig is a good round and is available. Otherwise, may as well be using 9x25 Dillon out of a longslide G20. I have always been a fan of the .38 Super, but to say the .357 sig isn't up to par is misinformation. Furthermore, it is a full size cartridge since it is based on the .40 S&W brass. I personally like the .357 over the .40 S&W but like the 10mm over both of them.

Last edited by BlueBronco; 01-13-2013 at 10:42 AM.
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  #24  
Old 01-13-2013, 10:36 AM
BlueBronco BlueBronco is offline
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Originally Posted by glider View Post
Sig does catelog a 1911 chambered for 357 sig, the nightmare I think. I looked just a few days ago, I'm interested in that to.
Sig does have the Nightmare and Nightmare carry chambered in .357 Sig as an alternative to the venerable .45 acp.

Edit: Night Mare Carry, I probably would have got this instead of my C3 had it been out at the time.

http://www.sigsauer.com/CatalogProdu...nightmare.aspx

Last edited by BlueBronco; 01-13-2013 at 10:46 AM.
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  #25  
Old 01-13-2013, 11:15 AM
glider glider is offline
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I have a SIG P229 that I will order a 357 barrel for in the near future, it's a 40 so barrel change is all that's needed and no fitting required . I ran the numbers for reloading and it's no more money than a 45 and that's comparing buying new brass from starline for each . The Sig Nightmare is a good looking pistol, haven't seen one in person but they are very interesting . The P229 is a very fine weapon, wish they made a single stack version, it's just to fat as is but that's the only fault I have with it.
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