Firearm & Gun Forum - FireArmsTalk.com > Handguns > Semi-Auto Handguns > XD Forum > Turning .40 XDM into .357 XDM (Barrel Swap)

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Old 01-26-2011, 01:23 AM   #1
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Default Turning .40 XDM into .357 XDM (Barrel Swap)

What do you guys think about turning your .40 XDM into a .357 XDM just by dropping a barrel in. Has anyone here tried it and if so, does it work good?

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Old 01-26-2011, 07:51 AM   #2
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Works just fine in my Sig P229, no reason to believe it would be any different in an XDM. Ammo is pricey though...

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Old 01-26-2011, 11:03 AM   #3
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This conversion barrel is specific to the newest XD; the XDm. What is a conversion barrel? A conversion barrel allows you to convert your large caliber XD (.40SW) down to a smaller caliber (357SIG) for the benefit of practice and plinking.
Just a description that made me laugh. Anyone who has shot both calibers knows exactly what I'm talking about. I'm not aware of anyone who trains with a 357 for their defensive 40...plenty go the other way around, however.

Back to the OP-- 357sig is a fun round, and the conversion should be a piece of cake. But only invest in that barrel if you'd prefer the 357sig to the 40sw. I could understand wanting the 357 for defense, but practice/plinking with a 40 is just a whole lot less expensive.
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Old 01-26-2011, 02:46 PM   #4
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Originally Posted by sweeper22 View Post
Just a description that made me laugh. Anyone who has shot both calibers knows exactly what I'm talking about. I'm not aware of anyone who trains with a 357 for their defensive 40...plenty go the other way around, however.

Back to the OP-- 357sig is a fun round, and the conversion should be a piece of cake. But only invest in that barrel if you'd prefer the 357sig to the 40sw. I could understand wanting the 357 for defense, but practice/plinking with a 40 is just a whole lot less expensive.
I understand where your coming from. 357 sig is to expensive to plink around with. I decided to go with a 9mm conversion kit. I'm getting the barrel from pistol gear and the guide rod and #16 spring from Springer Precision. I'm thinking I won't even notice my gun wasn't built to be a 9mm after these mods. Now 9mm on the other hand will be great for plinking. This mod will cost just under $200 shipped.

By the way, is .357 sig better for personal protection over a .40?
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Old 01-26-2011, 05:25 PM   #5
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357sig and 40sw are pretty well in the same class as defensive rounds. A lot of people (and LE agencies) prefer the faster 135gr variety 40sw defense load, which is ballistically similar to the 357.

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Old 01-27-2011, 12:55 AM   #6
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357sig and 40sw are pretty well in the same class as defensive rounds. A lot of people (and LE agencies) prefer the faster 135gr variety 40sw defense load, which is ballistically similar to the 357.
I haven't been able to find any .40 135gr at any of my local stores. Is that a hard round to find?
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Old 01-27-2011, 01:14 AM   #7
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I usually order JHPs online.

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Old 01-27-2011, 01:19 AM   #8
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I haven't been able to find any .40 135gr at any of my local stores. Is that a hard round to find?
Here are 4 types hovering at or around 135 grain: (the doubletap looks like the best one)

Magtech First Defense Ammunition 40 S&W 130 Grain Solid Copper Hollow Point Lead-Free Box of 20 - MidwayUSA

•Muzzle Velocity: 1190 fps
•Muzzle Energy: 409 ft. lbs.

Cor-Bon Self-Defense Ammunition 40 S&W 135 Grain Jacketed Hollow Point Box of 20 - MidwayUSA

•Muzzle Velocity: 1325 fps
•Muzzle Energy: 526 ft. lbs.

DoubleTap Ammunition 40 S&W 135 Grain Jacketed Hollow Point Box of 50 - MidwayUSA

Muzzle Velocity: 1375 fps
Muzzle Energy: 567 ft. lbs.

Glaser Pow'RBall Ammunition 40 S&W 135 Grain Box of 20 - MidwayUSA

•Muzzle Velocity: 1325 fps
•Muzzle Energy: 526 ft. lbs.
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