CS40 Conversion To 10MM
- Thread starter smokemup
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CS9 conversion to 357Sig,possible.
http://smith-wessonforum.com/smith-...913-chambered-357-sig-pics.html#post139242961
http://smith-wessonforum.com/smith-...913-chambered-357-sig-pics.html#post139242961
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Has anyone sucessfully converted the 5906 to .357 SIG? I know the breechface would need to be modified. I have an extra slide and barrel I was contemplating changing over to .357 sig caliber.
TNZ71
Member
I bet the .357sig from a 4000 series would just be a barrel swap
When I did my 4053 conversion a couple of years ago, I couldn't find a suitable buffer. You may have to create one if you decide it is needed.
On my 4053, what eventually became the donor 10mm slide/bbl combination uses the "nested" recoil spring configuration....the smaller diameter recoil guide and a Wolffe 21 lb recoil spring (#47721) and a S&W OEM inner spring. (The original, unaltered .40 S&W caliber slide and barrel use the larger diameter recoil guide and a 21 lb Wolff spring)
Range testing confirmed this 10mm recoil spring combination as heavy enough to compensate for the added recoil, and still allow the slide to open completely enough for the slide stop to engage. I tried to tune the recoil springs so that the slide would reach the slide stop, but not come back far enough to impact the frame.
On my 4053, what eventually became the donor 10mm slide/bbl combination uses the "nested" recoil spring configuration....the smaller diameter recoil guide and a Wolffe 21 lb recoil spring (#47721) and a S&W OEM inner spring. (The original, unaltered .40 S&W caliber slide and barrel use the larger diameter recoil guide and a 21 lb Wolff spring)
Range testing confirmed this 10mm recoil spring combination as heavy enough to compensate for the added recoil, and still allow the slide to open completely enough for the slide stop to engage. I tried to tune the recoil springs so that the slide would reach the slide stop, but not come back far enough to impact the frame.
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In the 4053 (using the converted slide and bbl in 10mm), after trying several heavier outer springs with hardball practice ammo, the combination of the 21 pound Wolff recoil spring (#47721) and the OEM inner spring seems to give the proper resistance to allow the slide to reach the point where it will just lock back on the last round, but not impact the frame. There is still the approx. .0125" of travel available past the catch on the slide stop assembly with the springs installed, so I don't think the slide is bottoming out/damaging the springs.
Tactical Springs (tacticalsprings.com) also makes an inner/outer spring combination for the 4516-2 that will work in the gun.
Set up for factory Hornady "duty" or carry ammo requires changing over to a Wolff 23 pound outer spring, part# 47723. I believe these two Wolff recoil springs are actually for the 4513. It's a chore getting the slide to lock open with the heavier spring combination.
Tactical Springs (tacticalsprings.com) also makes an inner/outer spring combination for the 4516-2 that will work in the gun.
Set up for factory Hornady "duty" or carry ammo requires changing over to a Wolff 23 pound outer spring, part# 47723. I believe these two Wolff recoil springs are actually for the 4513. It's a chore getting the slide to lock open with the heavier spring combination.
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ChiefsSpecial
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Hey...I just joined and found this thread. Very interesting, the idea of converting a CS40 into 10mm. I read all the posts and it seems like it's fairly straight-forward with little to no previous gunsmithing experience. I also immediately went on Gun Broker and started checking for CS40s. There are three on there right now, a blue with a buy it now of $675, a two tone with buy it now of $575, and a stainless that's at $579 with no bids, no reserve. What would be a fair price for one. Thanks and looks like a great forum community to be in.
I found mine on Armslist for $400, local. In Very Good Condition.
Almost feel bad for converting a good gun but then again, 10mm is the best mm!
Will this conversion only work with single stack 40's? I found a 4046 locally I can get for a good price and would like to try this conversion, but don't want to bother if the double stack mags won't feed 10mm reliably.
The double stack 40xx pistols are built on 9MM sized frames. The 10MM Auto cartridge will not fit into the magazines of these firearms
The Single Stack 40xx pistols are built on the 45/10 frame so there are no issues for the 10MM Auto cartridge length in the magazines
Ok. I thought there might be a problem. Thanks for the quick answer. The quest continues...
The quest is over!
I found a stainless CS40 on gunbroker and bought it. So I'll be looking at doing this conversion in the near future. It's my birthday present to myself
I found a stainless CS40 on gunbroker and bought it. So I'll be looking at doing this conversion in the near future. It's my birthday present to myself
Big Shrek
Member
There are multiple reasons why you SHOULD get that pistol...
just not for 10mm use
.40S&W loaded to max or Buffalo Bore ammo is similar to downloaded
standard 10mm ammo...and being a double-stack holds enough
rounds to solve for zero a decent sized group of miscreants
Does anyone know if Van Schneider of The Gun Works mentioned in OP is still in business? I looked up his number and called him, but it's been changed to an unknown number. Any suggestions on someone to do the chamber reaming?
ace22
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I didn't even know that van was mentioned in this thread until today.
I know him but i haven't seen or spoken to him for a couple years, right about the time that he closed his shop which i was never in btw.
i have no contact info for him but would be interested to know if anyone knows if he's a member of this forum.
Google maps shows Gunworks at 534 Scott Street,Sandusky 44870 as permanently closed.
I bought my reamers from Midway and Brownells,both show currently 'out of stock'.
Stainless Steel barrels are difficult to machine and special cutting fluid needed.
And before you ask,no I will not chamber ream a barrel that isn't mine,too easy to screw up.
I used to see Gunworks set up at gun shows here in northern Ohio,if I see Van at a future show,I'll try to find out what's going on.
You might try on the 10mm-firearms.com forum if anyone does chamber reaming.
I bought my reamers from Midway and Brownells,both show currently 'out of stock'.
Stainless Steel barrels are difficult to machine and special cutting fluid needed.
And before you ask,no I will not chamber ream a barrel that isn't mine,too easy to screw up.
I used to see Gunworks set up at gun shows here in northern Ohio,if I see Van at a future show,I'll try to find out what's going on.
You might try on the 10mm-firearms.com forum if anyone does chamber reaming.
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Please keep us posted with any updates! I have everything needed except the custom barrel work.
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