Originally posted by roym: They are out of 40 for the moment, but have 9 and 357 sig right now
The .40 and the .357 Sig should be the same mag. In fact, most Sig factory mags for both pistols are marked '40/357', not sure why those aren't. But since the .357 Sig is based off the .40 parent case, the same mag works for both. Or at least I "THINK" they should, LOL!
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the mag for a 239 using a 357 sig round is necked down so it will not work with a 40. The mag for the 40 is not necked down at the top and will work with 357 sig. I have never had any problems with this. I however believe the actual 357 sig mag will better present the next round if using for a self defense situation where you wish there to be no doubt of reliability