6906 in .356 TSW, Marlin Camp-9/.356 TSW, New Project - Ruger PC4/.357 SIG

[bad_man_ one]

Let me start off by saying, I'm hooked on the .356TSW caliber.

If I can find someone's extra 6906 barrel that they want to give up?
I'm contemplating having forum member RSnyder modifying the barrel for .356TSW.
He made me one for my 5906 and I put a 22# recoil spring into it to handle the power.
It all works well.

The factory spring for the 6906 is a 15#, stock for the 5906 was 14#'s and I did the Wolff 22# one.
I can only assume I would need at least the same % increase (about 157%).
I looked at Wolff's site for the 6906 and the stock is 15#'s and they only go up to a 20#.
I called Wolff and they gave me the specifications on the heavier springs for the 4013 and 4516
which will fit the 6906, I have the option of using the 17#, 19#, 21# and 23#.
Knowing what I have learned from the 5906, I would start with the 23# spring.

If anyone has an extra 6906 barrel that they would like to part with, please let me know.

I looked on the S&W site at the 6906 parts and it shows two different barrels listed.
P/N 200160000 and P/N 236940000.
I do not know the difference between the two.
Does anyone know the difference between them?
(Edited - I spoke to S&W C.S. - the 236940000 is the later one and has the wider hood.)
Thanks,
BM1

 

[handgunner356]

The 22# sounds pretty stiff, how far does it eject the spent brass? On the compact/SD 356 they used the same dual spring setup as the 40/45TSW compacts, which come out around the same 17# as used in the full size 3566. I would think that the 20# in the compact would be enough, but if you could get the smaller rod/bushing upgrade that S&W was putting in the earlier 4013/4513 that use the dual spring setup it would probably work the best. The dual springs are not available from Wolff, but the outer is the same as a 6906 which would give you some operating range. The barrel hood width is the main differance on the barrels, .260"vs.390".

 

[KurtC]

The compact 356TSW models used a longer slide than the 6906, as well as a stainless steel frame. The 6906 is aluminum.

 

[handgunner356]

The SD has the longer slide but the compact uses the same, and both use the 3.5" guide rod/spring setup.

 

[RGAmos]

I have a couple of Super 9's and have questioned whether the supplied recoil spring is satisfactory for both the .356 and 9mm. S&w tells me the one spring is OK for both, but I still question whether it is.

 

[Grinder]

BM1,
as we discussed on the phone, my .356 6904 has the stock recoil spring. It really throws the brass, but works flawlessly with the original 9mm mags. I bought a +2 and +4 springs, but haven't tried them yet. Keep us informed.

 

[bad_man_ one]

With allot years in Manufacturing Engineering with Aerospace Machining,
I acquired an electronic scale that is capable of weighing out to .001 of a Pound or .016 Ounce.

That being said, I did some weight testing with the complete slide assemblies:
(slide, barrel, recoil spring and guide rod, sights, firing pin and spring, decocker)

6906 9 m.m. - - - - - - - - - = .892 Lbs. or 14.272 Oz. - Stock 15# S&W Spring P/N 10095
3566 .356TSW - - - - - - - - = .937 Lbs. or 14.992 Oz. - Stock 16# S&W Springs Out/In 10866/10867
3906 FS 9 m.m. - - - - - - - = .966 Lbs. or 15.456 Oz. - Stock 14# S&W Spring P/N 06048
5906 FS .356TSW conversion = .974 Lbs. or 15.584 Oz. - 22# Wolff Recoil Spring
5906 AS 9 m.m. - - - - - - - = .989 Lbs. or 15.824 Oz. - Stock 14# S&W Spring P/N 06048
3906 AS 9 m.m. - - - - - - - = 1.006Lbs. or 16.048 Oz. - Stock 14# S&W Spring P/N 06048
4013 40 S&W - - - - - - - - = 1.054 Lbs. or 16.864 Oz. - Stock 16# S&W Springs Out/In 10866/10867
4516 .45 ACP - - - - - - - - = 1.097 Lbs. or 17.552 Oz. - Stock 16# S&W Springs Out/In 10866/10867
356 Limited 5.00" .356TSW - = 1.248 Lbs. or 19.968 Oz. - Stock 14# S&W Spring P/N 06048

I do not know the pound rating for sure for the double spring combination for the 3566 compact, 4013 and the 4516.
Wolff shows the stock single spring at 16# and I think S&W would have gone higher when they redesigned the double spring combination.
It would only make sense, to me.

I spoke to Jimmy Ray @ the Performance Center and asked about the 3566 Compact and 356 Limited.
That is how I arrived at the part number on the Limited recoil spring.
They/he was not able to give me the P/N for the 3566 Compact spring.
I will compare it to the 4013 (wire size, number of coils and length, [used]), But I think they are the same.

I hope this didn't get too complicated.
After interpolating all the data, without going into the equations.
The one unknown factor is slide velocities which I cannot measure, other than how far the brass gets thrown.

The bottom line is:
I could probably go down to the 20# spring on the 5906 to .356TSW conversion,
it would keep it from slamming closed as fast.
The 21# would probably be ok on the 6906 to .356TSW conversion, but I would start with the 23#
Regards,
BM1
(It took me a couple of edits to get the information to [some-what] line up)

 

[bad_man_ one]

Anyone out there that would like to get rid of a spare 6906 wide hood barrel?
Regards,
BM1

 

[bad_man_ one]

BTT

Originally posted by bad_man_ one:
Anyone out there that would like to get rid of a spare 6906 wide hood barrel?
Regards,
BM1

 

[bad_man_ one]

Hooray................
It's all coming together, My prayers were answered.
Big thanks to forum member "Orangehole" for contacting me with a possible 356TSW barrel could possibly fit my 6906, I now have a real "Pocket Rocket" with the alloy frame. It is allot lighter than my 3566 Compact.
It comes from a prototype 3913TWS that was made by another forum member as a test for the 356TSW caliber, he has/had extensive Performance Center knowledge. (Name: Withheld for privacy)
Turns out it was one of two or three.
Please post if you would like to...............
It turns out that they (the 3913TSW and 6906) both have the same barrel P/N.
I'm just waiting for my Wolff springs to come in.
I will keep in touch and give a Range Test and Evaluation on this.
I don't know how well the pictures will come out.
Regards,
BM1

 

[orangehole]

Glad to be of help BM1. I sold my 3913TSW a while ago so the barrel was gathering dust in my safe and I am really happy it went to a person who appreciates the round. I am sure you will put it to good use. You have to love this forum. Alot of great helpful people enjoying the same hobby!

 

[bad_man_ one]

Finally got to the range and it all came together today.

The 6906/356TSW is the "Cats Meow" as far as the new "Pocket Rocket".
I started out with the 23# Wolff recoil spring and that's what it needed, cycled perfectly.
Federal 135 gr. Hydra-Shok JHP's, Federal 147 gr. FMJ Gold Metal Match and
Cor-Bon's 124 gr. BHP's(only a couple of those).
Including forum member Rbert0005's reloads worked super.
(5.4 Win 231 w/125 gr. Rainier's, 1.165 OAL).
Thanks to all the forum members involved with the ideas and transactions for my 356TSW love affair.

Grinder, Rsnyder, VM, Rbert0005, Gman356ca for the load data and anyone that I might have missed,
you know who you are.

I now have quite a collection in this caliber;
PC-940 Centennial, PC-3566 Compact, PC-356 Limited, the 6906 and the newest,
a beautiful 5903 to go with my 5906(they both use the same barrel and spring combination)

And a special thanks to Orangehole and Wesman for this one-of-a-kind Performance Center 356TSW barrel.
Regards,
BM1

 

[bad_man_ one]

Last week I emailed Starline Brass about the possibility of getting some 356TSW brass,
If they didn't have any on hand, how much would an order need to be to run some off,
maybe a group buy with members on the forum.
This was their response not the quantity I had expected.
Regards,
BM1


"BM1,
We have zero .356 TS&W left and no plans to produce any more
(you are the first person to even request them in as long as I can remember).
If we were to produce them it would take a minimum order of 100,000 pieces
and would be about six months lead time."
Thank you,
Hunter Pilant
Media Relations/Technical Support
[email protected]

Starline Inc.
1300 W. Henry Street
Sedalia, MO 65301
800-280-6660
660-827-6640

 

[7tenz]

Don't got a 356 tsw. I was looking at them in the 90's but never jumped. Anyway Turners Sporting Goods in Corona CA has six boxes of 124gr factory CorBon they found buried somewhere if anyone is interested in contacting them.

To the 22# Wolff spring, that is what I use in my 1006 10mm. 24 would be the upper end, either sounds a little stiff for a 356 tsw.

 

[bad_man_ one]

7tenz,
That is because the mass (weight) of the slide of a 1006 is much more than a compact 9 m.m.
which is why I was able to use the 23# spring and it cycles 100%.
I'll check into those Cor-Bon's.
Regards,
BM1

 

[rsnyder]

Konrad, I'm in for 2000 pieces.
Bob

 

[7tenz]

Originally posted by bad_man_ one:
7tenz,
That is because the mass (weight) of the slide of a 1006 is much more than a compact 9 m.m.
which is why I was able to use the 23# spring and it cycles 100%.
I'll check into those Cor-Bon's.
Regards,
BM1

That makes sense, ok. But the one and only thing I don't like about the 10mm is it's heavy spring. You want them to work 100% all the time, because with the 22-24# spring it is a lot harder to clear malfunctions.

Turners has a webpage, turners.com. You can get an address and ph# for the Corona store there. Let me know how you make out.

 

[SmithNut]

BM1,
as we discussed on the phone, my .356 6904 has the stock recoil spring. It really throws the brass, but works flawlessly with the original 9mm mags. I bought a +2 and +4 springs, but haven't tried them yet. Keep us informed.

You guys are having too much fun here! Who can tell me where to find a .356tsw barrel for my M6944? That would be a fantastic project. Grinder, did you have your original barrel reamed out or did you find one of these special PC barrels? I would sure be appreciative if anyone knows where another one of those are.

Regards,

 

[Grinder]

Originally posted by SmithNut:

BM1,
as we discussed on the phone, my .356 6904 has the stock recoil spring. It really throws the brass, but works flawlessly with the original 9mm mags. I bought a +2 and +4 springs, but haven't tried them yet. Keep us informed.

You guys are having too much fun here! Who can tell me where to find a .356tsw barrel for my M6944? That would be a fantastic project. Grinder, did you have your original barrel reamed out or did you find one of these special PC barrels? I would sure be appreciative if anyone knows where another one of those are.

Regards,

It is an older narrow hood barrel pistol, so I had it reamed out. The PC barrel is the wide hood. Should be no problem picking up a 9mm barrel to throw back in my 6904 sometime.
Good luck on your project

 

[Grinder]

Originally posted by bad_man_ one:
Last week I emailed Starline Brass about the possibility of getting some 356TSW brass,
If they didn't have any on hand, how much would an order need to be to run some off,
maybe a group buy with members on the forum.
This was their response not the quantity I had expected.
Regards,
BM1


"BM1,
We have zero .356 TS&W left and no plans to produce any more
(you are the first person to even request them in as long as I can remember).
If we were to produce them it would take a minimum order of 100,000 pieces
and would be about six months lead time."
Thank you,
Hunter Pilant
Media Relations/Technical Support
[email protected]

Starline Inc.
1300 W. Henry Street
Sedalia, MO 65301
800-280-6660
660-827-6640

My last .356TSW order was in Sept. 2007

I'd go in for a few more