Springfield XD-40 to .357sig

[MikedaddyH]

Can I convert my XD-40 to a .357sig with just a barrel and spring change ? Or do I need to get new Mags ?

[MikedaddyH]

XD-40 Mag  # xd-5011 12rd

XD-.357sig  # xd-5012 12rd

I dont know if they are compatable?

[Robocop1051]

I have seen the Sig P226 swapped from .40 to .357 with just a a barrel swap, and the same mags used. I think Glock is the same too. I don't see any reason why XD's would be different. I'm sure that the different model numbers is because of labeling/engraving of the caliber on the mag.

[MikedaddyH]

Robo , thanks that is what I was thinking. Two sites stated that the Glock and Sig swaps didn't need a mag change but there was no info on the Springfield XD. The .357sig rounds fit in the 40S&W mag with out any issues.

[Robocop1051]

I'm not an expert on the round, but I believe the .40S&W and the .357Sig both came from the 10mm Auto. I would expect almost all their measurements to be the same, minus case length.

An impressive bullet. The .357 Sig fills the gap between the .38 +P+ and the .357 Magnum... And it does it in an automatic casing! It's too bad that it's popularity didn't take better. It might be that it doesn't really surpass the performance of the 9mm by much, and you lose the ammo capacity of the 9mm.

[planeflyer21]

That, Robo, and ballistically it is very similar to Super .38, which retains a high magazine capacity due to the straight walled cartridge.

I also believe the bottle neck turns off reloaders used to straight pistol cases.

Jon