Help to find 1066 .40 bbl

[44wheelman]

I am looking for a conversion bbl for my 1066 in .40 S&W. Does anybody have a suggestion, or know of one available? Any help appreciated, thanks.

Only S&W bbls I see online are for the M&P's.

Bar-Sto made them at one point, even a member here made a few...

[oldman10mm]

Why do you want to convert a 1066 to 40S&W ?

[44wheelman]

I have a bucket full of .40 brass, and a ziplock bag full of 10mm. My gun chucks my 10mm brass halfway down the range.

Plan would be to load the .40 more like a 10mm (using 180 or 200gr bullets), and not worry about the brass. I can get longer OAL & higher pressures in a 10mm, rather than trying to hot rod a .40 caliber gun not designed for it.

[oldman10mm]

SAAMI pressure for 40S&W is 35,000,for 10mm 37,500. Not much of a difference. 4013s',4014s',4053s', & 4054s' are the S&W 40s' that are sought after to convert to 10mm. It would be 'safe' to do some 'hotrodding' in those.

rebore a 4053 to 10mm? help needed

Since converting those requires stronger recoil springs,I'm going to assume that converting a 10mm to 40S&W,via a barrel swap,would require weaker recoil springs.

[6actual]

I feel your pain, I don't even pick up .40 brass anymore I have so much it. However I cry big tears when I lose even a little bit of 10mm brass

[kaveman]

T'were it me,......I'd just buy a 4006 understudy. Could probably get into one for around $400 and I'm not sure that wouldn't be cheaper than a custom barrel and the aggravation of twiddling with springs and trying to long-load .40's to function,...........and hey, it's another gun!! All steel .40's are bargain priced right now.

[oldman10mm]

Even though I posted about the 'mod',I agree about getting a 4006 or comparable model. They're inexpensive. There are 23 varieties of S&W 3rd gens,some SS,some blue,some TSWs',some TDA,some DAO,11 basic models in the line.

[6actual]

The S&W 4006 don't "feel" near the same as 1006 in my hand, now if you could put a 4006 upper on a 1006 lower the 10mm mags likely would feed .40 with no issues. problem is I have no clue though if it would frankengun together properly

[kaveman]

No, a 4006 slide won't fit on a 1066 frame. The 4006 is built on the 9mm length receiver and the 1066 is built on the .45 length receiver. Unfortunately there is no full size single-stack .40 that would provide the same grip feel of the 1066,........but you could go with a 4566 which would be identical except for the hole in the muzzle. Wouldn't be as cheap shooting as a .40 but it would save a bunch over a 10mm.

But, a 4013 slide assembly might work. It'd be a bit shorter, but it's the same lengthened frame as the 1066. Hmmm,.......

[03Fatboy]

You could put a single stack 4013 slide and barrel on the 1066 frame to shoot 40. Or convert the 4013 to 10mm for a 1066 SSV

[BLUEDOT37]

Originally Posted by kaveman

...But, a 4013 slide assembly might work. It'd be a bit shorter, but it's the same lengthened frame as the 1066. Hmmm,.......

.

Done!

I did this a while ago. http://smith-wessonforum.com/smith-w...ht=4076+hybrid

I haven't shot it like this but everything functions (except the slide decocker) & feeds correctly, best I can tell.

.



.

[JohnHL]

I've heard some folks load and shoot the .40 s&w cartridge in their 10mm S&W pistols with no modifications at all.

John

[oldman10mm]

shouldn't be able to as the cartridge would fall too far into the chamber and not be struck by the firing pin.
unless you're referencing to the 610 revolver which will shoot both 40S&W and 10mm.

[bigggbbruce]

Originally Posted by oldman10mm

shouldn't be able to as the cartridge would fall too far into the chamber and not be struck by the firing pin.

It would ride on the extractor. Still not the way to go.

[JohnHL]

Originally Posted by bigggbbruce

It would ride on the extractor. Still not the way to go.

I've seen and read many hypothetical reasons why it shouldn't be done, yet there are many documented cases of it being done regularly and safely.

One forum member even claims S&W told him it was OK to do so. See posts numbers 10 and 15 of the attached thread.
10mm conversion to 40s&w

John

[Sevens]

I would ask Fastbolt if it is okay. I don't see any safety issue, but I cannot see any way this isn't extremely hard on the extractor-- which is a fitted part. And while I have zero intentions of saying that the guy relaying words directly from S&W is not true -- most of us have seen PLENTY of examples of goofball stuff coming from nameless, faceless S&W "representatives" so I simply won't subscribe to the idea that it's okay to run .40 S&W in a 10xx pistol.

To the OP-- your quest & wants are completely valid for exactly the reasons you stated.

I believe you may NEVER find the barrel you seek. I've had my 1006 since 1996 (IIRC) and I have never come across one. I bet one will appear on Gunbroker one day and I also bet it ends over five hundo.

[JohnHL]

Originally Posted by Sevens

I would ask Fastbolt if it is okay. I don't see any safety issue, but I cannot see any way this isn't extremely hard on the extractor

Not saying you are wrong...
Just trying to learn...
Why would this be "extremely hard on the extractor"?

John

[Sevens]

The extractor is designed to do a very specific and extremely important task. If we attempt to run a shorter cartridge (where the proper cartridge is designed to head space on the case mouth) we are now forcing the extractor to do another job -- one for which it was simply not designed to do.

It seems to me that -IF- it works...
Best case scenario means that the workload of the extractor has now tripled.

Where before, it's job was to pull an empty case from the chamber, it now has to continue doing it's original job, but it now must also keep a fresh loaded round from falling forward in to the chamber (nothing else will stop it) and it must also hold that round steady while the firing pin strikes it.

FWIW, I have a Glock 29 that happily runs .40cal with no spring or magazine change as long as I use my accessory KKM barrel. That pistol has over 6,500 rds through it, half .40 and half 10mm.

But with the 10mm barrel in it, .40cal rds jump the extractor hook often.

Why would I try it?
Meh... it's an ugly Glock!

[JohnHL]

You might find this interesting:

Why I Shoot .40 Through My Unmodified 10mm GLOCK - The Truth About Guns

John

[Sevens]

The article was interesting, thanks. I agree with some (not all) of it. It is worth noting that even the author doesn't think it's a good idea in other pistols and it doesn't really apply to this conversation regarding S&W pistols -- limited and long out of production, with hard to find and fitted extractors.

Smith & Wesson made just over 50,000 pistols chambered for the 10mm... the very last of them in 1993. Glock has probably produced 50,000 Glocks since we started this conversation.

If we were talking about 5906's or 915's... something they made metric tons of, I would certainly be more apt to running them with reckless abandon. With my 1006, not so much.

[JohnHL]

I did quite a bit of internet research and I found most posters divided into one of two camps: those who caution against it for theoretical reasons, and those who have actually done it. A lot. And report no problems. Other brands than glock also, including S&W.
I heartily agree, if a person is uncertain about proper procedures, they should not try any innovations.
But now I'm intrigued.
I'm going to run some tests and try it out in my 1006.
I'll report back.

John

[Sevens]

Haha, quite liberal use of the term "innovations" I must say, but I do look forward to your findings. As I've been loading this cartridge since '92, I think I have actually gotten to a place where I have 'enough' brass. Admittedly, I continue to simply loathe losing that brass, but that fact hasn't stopped me from shooting it.

[duncan]

Originally Posted by 44wheelman

I have a bucket full of .40 brass, and a ziplock bag full of 10mm. My gun chucks my 10mm brass halfway down the range.

Plan would be to load the .40 more like a 10mm (using 180 or 200gr bullets), and not worry about the brass. I can gremanufactriget longer OAL & higher pressures in a 10mm, rather than trying to hot rod a .40 caliber gun not designed for it.

Sorry but it's highly unlikely anyone mass produced 40sw conversion barrels.

I have tons of 10mm brass and have long-loaded 40SW with 200 grainers for my 40SW guns but lowered the powder charges for safety.

Winchester white box 10mm ammo is lightly charged and you'll be able to build up your 10mm brass inventory.

Oh, get a heavier recoil spring setup from Wolff to get your brass dropping closer to your feet ;-)

https://www.gunsprings.com/index.cfm...s&cID=1&mID=58

Extra Power........: 18, 19, 20 & 22 Lb.

[BLUEDOT37]

Originally Posted by duncan

Oh, get a heavier recoil spring setup from Wolff to get your brass dropping closer to your feet ;-) Extra Power........: 18, 19, 20 & 22 Lb.

It'll help, but not much. I have a 22# in mine & they still ricochet off the wall & go several stalls away.

I hate chasing brass!

.

[peh_7]

One solution to not loosing brass is a brass catcher. There are a number of options. I use one from "http://brasscatcher.systems/" but there are less expensive ones available. They my not catch every round but in my experience saves the majority of it and keeps me from bending over so much.

peh_7

[44wheelman]

thx for the idea, i first read your post I had a mental picture of a small cage on the gun....the Bubca looks almost tolerable.

For now, I am just looking for a 4013 to swap its slide/bbl. Saw a parts kit on gbroker, but it went for $322+s/h... Ill just use my 610 for now, and 4006 & USP til I get a 4013.

[BruceM]

One forum member even claims S&W told him it was OK to do so.

If you or anybody else can provide a case where the manufacture of a 10mm autoloader states IN WRITING that it is safe and acceptable to fire .40 S&W ammo in their 10mm guns I'll buy in. Just a single one will do. Until then, everybody is free to do what they feel is best for them.

Why I Shoot .40 Through My Unmodified 10mm GLOCK - The Truth About Guns

The Gun Zone -- 10mm v. .40 S&W FAQ

I personally disagree with the author of the above article concerning the Springfield Armory Omega and other Peter Stahl linkless 10mm guns with dual extractors also. Does anybody even worry about erosion of the shoulder in the 10mm chamber by high velocity 35,000 psi hot gasses when firing the shorter round in the longer chamber?

Bruce

[JohnHL]

Originally Posted by BruceM

If you or anybody else can provide a case where the manufacture of a 10mm autoloader states IN WRITING that it is safe and acceptable to fire .40 S&W ammo in their 10mm guns I'll buy in. Just a single one will do.

If you or anybody else can provide a case where the manufacturer of a .40s&w autoloader states IN WRITING that it is safe and acceptable to bore out the chamber and fire 10mm ammo in their ALLOY FRAMED guns (even I wouldn't do that), I'll buy in.
Yet a number of folks on this forum have done it and still have all their fingers.
Are they crazy?
No. Just knowledgeable and experienced.
If your experience level tells you not to modify a product you own until you receive a corporation's permission then it would be best for you to follow that advice.

Until then, everybody is free to do what they feel is best for them.

Not only "until then" but as long as determined individuals can maintain that freedom.

Does anybody even worry about erosion of the shoulder in the 10mm chamber by high velocity 35,000 psi hot gasses when firing the shorter round in the longer chamber?

I sure don't.
I think it would take a LOT of pistol rounds before erosion became a concern.

John

P.S. I just hand cycled a mag full of .40s&w through my 1006 with no problems.
When I get a chance, I'll fire some.
And yes, I'll remember to clean my chamber before loading any 10mm cartridges.

[BruceM]

Right!

Those folks who design and build these guns are actually pretty obtuse compared to the "knowledgeable experimenters" who outsmarted all of those Bumpkins.

Sounds plausible to me.

Bruce

[Big Shrek]

Originally Posted by 44wheelman

...Only S&W bbls I see online are for the M&P's.

Bar-Sto made them at one point, even a member here made a few...

Ok, stop right there, and call Bar-Sto.
Just because its no longer listed on their online catalog, means little.
First, nicely chat up the CSM, it may still be available in their system.
You may need to ask for a Supervisor, as a regular CSM
may have not been there long enough to remember those barrels.
It may be a "Special Order" item now...

But you'll never know, until you call 'em