Why Can't I Use a Sig 9mm Mag in My Sig P226R .40 S&W Pistol?

[Canuckistanman]

I own a Sig P226R Elite .40 S&W and have a .357 Sig barrel and EFK Fire Dragon 9mm conversion barrel.

The barrels all fit perfectly. However, when I try to insert a Sig 9mm mag into the pistol to use with the EFK 9mm conversion barrel, this mag won't stay solidly in place. If I hold this mag in place, the slide won't stay back when I #### the pistol.

I know you can use 9mm rounds in the .40 S&W/.357 Sig mags but shouldn't as the shorter extractor in the pistol will probably not extract the empty 9mm casing every time I fire the pistol. Any solutions to my problems? Thanks.

C

 

[Colin]

Odd I can use 9mm Sig 226 mags in my .40cal 229, but not the other way around. Have you compare the mags side by side?

 

[apu]

Don't have an answer for your current scenario but I have used a 229 40S&W/357Sig mag loaded with 9mm rounds to full capacity with a 9mm conversion barrel in a 40S&W 229, no issues at all with extraction, worked perfectly.

 

[Canuckistanman]

Mag Problems

Odd I can use 9mm Sig 226 mags in my .40cal 229, but not the other way around. Have you compare the mags side by side?

I found a Sig-made 9mm mag deep in my ammo chest and it fits in my P226 .40 S&W perfectly. I'm guessing the Mec-Gar ones made in Italy I tried before are slightly different and maybe that was the problem? Time to order a couple more Sig-made 9mm mags I guess.

I will also try using my .40/.357 Sig mags loaded with 9mm rounds next week at the range and let you know how things work out. Thanks for all the help. Cheers,

C